{"title":"Acoustics and MP3","description":null,"products":[{"product_id":"ne5532-vorverstarkerplatine-12-35v","title":"NE5532 preamplifier board - 2 channels, 12-35 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eOperational amplifier module with NE5532 IC for low-frequency amplification\u003c\/li\u003e \u003cli\u003eOperating voltage range: 12 to 35 V, single supply\u003c\/li\u003e \u003cli\u003eTwo independent channels on one board\u003c\/li\u003e \u003cli\u003eInputs for signal sources with high output impedance\u003c\/li\u003e \u003cli\u003eLow-impedance outputs for downstream stages\u003c\/li\u003e \u003cli\u003eFootprints for external feedback and bias resistors\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThe preamplifier with two NE5532 channels provides amplification in the audio and low-frequency ranges. Each channel is configured and operated independently, allowing for flexible wiring in your setup.\u003c\/p\u003e \u003cp\u003eThe NE5532 is a low-noise, wide-band operational amplifier. The gain is set using external resistors; without feedback, the IC operates in output saturation. Typical gain values range from 10 to 100, depending on the resistor ratio.\u003c\/p\u003e \u003cp\u003eApplications include microphone preamps in recording chains, instrument input circuits for synthesizers and effects units, and signal conditioning in analog measurement stations. The module is also suitable for rebuilding tube amplifiers or as a preamp stage for power amplifiers.\u003c\/p\u003e \u003cp\u003eThe operating voltage must be between 12 and 35 V; a power supply is required. The IC circuit requires biasing, so the inputs must be dimensioned correctly; otherwise, the signal will distort. For high-impedance signal sources, an input impedance of at least 10 kOhm is required.\u003c\/p\u003e \u003ch3\u003eSafety information\u003c\/h3\u003e \u003cp\u003eOperating the IC at voltages above 35 V will destroy it. This module is intended exclusively for prototype construction and testing and development purposes; it is not suitable for installation in household mains circuits. Work on or near electrical installations must be carried out by qualified electricians; if you are unsure about the power supply or design, consult a qualified electrician before commissioning.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x NE5532 preamplifier board 12-35V\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":65997802209629,"sku":"F23107770","price":4.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/ne5532-vorverstaerkerplatine-12-35v-funduino-8904515.png?v=1791493422"},{"product_id":"stereo-mischerplatine-3-5-mm-2-eingange-4-ausgange","title":"3.5 mm stereo mixer board - 2 inputs, 4 outputs, passive","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eStereo mixer for audio sources with 3.5 mm jack output\u003c\/li\u003e \u003cli\u003eTwo balanced inputs for line-level signal sources\u003c\/li\u003e \u003cli\u003eFour separate outputs for flexible routing options\u003c\/li\u003e \u003cli\u003ePassive circuit with no external power supply required\u003c\/li\u003e \u003cli\u003eCompact circuit board for installation in enclosures or mobile applications\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThis stereo mixer board combines two audio sources via 3.5 mm jack plugs. It operates on the summing principle, mixing both input signals at adjustable levels. The passive design requires no external power supply, simplifying setup and operation.\u003c\/p\u003e \u003cp\u003eThe four separate outputs allow for different configurations, including parallel amplification of the summed signal, separate output by input, or individual routing to different audio devices. This makes the board suitable for flexible audio routing in projects where multiple devices are connected to the mixing stage.\u003c\/p\u003e \u003cp\u003eTypical applications include mobile sound systems where two audio sources, such as a microphone input and music playback, need to be mixed, or audio-processing development projects where different level combinations are tested. The board also offers a practical solution for connecting multiple audio devices when input availability is limited.\u003c\/p\u003e \u003cp\u003eOperation requires 3.5 mm jack plugs and compatible audio cables. The board provides line-level signals and is not designed for direct connection to headphone or speaker amplifiers; it serves as a mixing stage in the signal path. Users should check the input levels to avoid clipping.\u003c\/p\u003e \u003ch3\u003eSafety Notice\u003c\/h3\u003e \u003cp\u003eThis module is intended solely for prototype assembly and testing and development purposes. It is not intended for connection to household mains wiring. If in doubt, consult a qualified electrician before use.\u003c\/p\u003e \u003ch4\u003eScope of Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x Stereo mixer board 3.5 mm - 2 inputs, 4 outputs\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":65997814137181,"sku":"F23107708","price":23.52,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/stereo-mischerplatine-35-mm-2-eingaenge-4-ausgaenge-funduino-6984701.jpg?v=1791474009"},{"product_id":"vs1053-mp3-shield-fur-arduino-uno-r3","title":"VS1053 MP3 Shield - microSD slot, 3.5 mm jack, for Arduino UNO R3","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eExpansion module for Arduino UNO R3 for playing and recording MP3 and audio files\u003c\/li\u003e \u003cli\u003eVS1053 decoder IC with integrated amplifier\u003c\/li\u003e \u003cli\u003eSPI interface for data transmission\u003c\/li\u003e \u003cli\u003e3.5 mm jack socket for headphones or external speakers\u003c\/li\u003e \u003cli\u003emicroSD card slot for storing audio files\u003c\/li\u003e \u003cli\u003eOn-board voltage regulator for stable power supply\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThis module adds the ability to play and record digital audio to an Arduino UNO R3. It connects to the board via the SPI interface and uses pins 10 to 13, along with additional GPIO lines for control signals. The integrated VS1053 decoder processes MP3, OGG, and WAV files; an on-board amplifier drives headphones directly or feeds an external audio system.\u003c\/p\u003e \u003cp\u003ePower is supplied by the Arduino itself, while a regulator integrated into the module provides the voltage levels required by the decoder. Audio files are read from a microSD card; the module supports cards up to 2 GB. Newer formats are often recognized, but this is not guaranteed. Recordings can be made through an audio input connection, provided a microphone with a preamplifier is connected.\u003c\/p\u003e \u003cp\u003eAn Arduino UNO R3 or compatible board with accessible SPI pins and at least four additional digital inputs and outputs for control is required. A microSD card and audio files in a supported format must be purchased separately. The Arduino's memory (2 kB RAM) limits the buffer size and range of functions, so complex media libraries can only be implemented to a limited extent.\u003c\/p\u003e \u003ch3\u003eSafety Notice\u003c\/h3\u003e \u003cp\u003eThis module is intended exclusively for building prototypes and for testing and development purposes. It is not designed for permanent integration into consumer devices. When operating with external power sources, ensure that the voltages do not exceed the permitted range and that the ground points are connected. Before putting it into operation, have a qualified electrician check the power supply if there is any uncertainty about the required operating conditions.\u003c\/p\u003e \u003ch4\u003ePackage Contents\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x VS1053 MP3 Shield for Arduino UNO R3\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":65997862764893,"sku":"F23108448","price":10.61,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/vs1053-mp3-shield-fuer-arduino-uno-r3-funduino-5184892.png?v=1791494786"},{"product_id":"max9814-mikrofonverstarker","title":"MAX9814 microphone amplifier - AGC, 2.7-5.5 V","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eMicrophone amplifier for electret condenser microphones\u003c\/li\u003e \u003cli\u003eOperating voltage: 2.7 to 5.5 V\u003c\/li\u003e \u003cli\u003eOutput signal normalized to 0 to 2.7 V\u003c\/li\u003e \u003cli\u003eAutomatic gain control adjusts to the input level\u003c\/li\u003e \u003cli\u003eSOP-8 package with eight connection pins\u003c\/li\u003e \u003cli\u003eNo external calibration required\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eAn IC-based microphone amplifier converts the weak analog output signals from electret condenser microphones into usable audio signals. The module automatically adjusts the gain to keep the output level stable between 0 and 2.7 V, regardless of how loud or quiet the sound source is.\u003c\/p\u003e \u003cp\u003eSince the amplifier is designed for voltages between 2.7 and 5.5 V, it can be connected directly to 3.3 V systems or 5 V boards. Automatic level control reduces the need for post-processing by the microcontroller and provides a consistent output signal even when volume levels vary. No calibration is required.\u003c\/p\u003e \u003cp\u003eTypical applications include voice or noise detection in IoT devices, voice-activated input, and acoustic monitoring of machines. In projects, the module serves as a front end for audio processing on microcontrollers with analog-to-digital converters.\u003c\/p\u003e \u003cp\u003eConnect the microphone and output lines according to the datasheet. The output frequency depends on the ADC used and its sampling rate. If necessary, stabilize the power supply relative to other components to avoid noise interference.\u003c\/p\u003e \u003ch3\u003eSafety Notice\u003c\/h3\u003e \u003cp\u003eThe module is intended exclusively for prototype assembly and testing and development purposes. It is not intended for installation in household electrical circuits. If you have questions about integration into existing systems or the power supply, consult a qualified electrician.\u003c\/p\u003e \u003ch4\u003eScope of Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x MAX9814 microphone amplifier\u003c\/li\u003e \u003cli\u003e1x pin header\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":65997865091421,"sku":"F23106450","price":4.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/max9814-mikrofonverstaerker-funduino-3768950.png?v=1791494247"},{"product_id":"subwoofer-vorverstarker-ne5532-mit-tiefpassfilter-dc-12v-24v","title":"NE5532 subwoofer preamplifier - low-pass filter, 12-24 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eAmplifier module with low-pass filter for subwoofer applications\u003c\/li\u003e \u003cli\u003eNE5532 operational amplifier with adjustable filter cutoff frequency\u003c\/li\u003e \u003cli\u003eInput level up to 2 V, 10x amplification\u003c\/li\u003e \u003cli\u003eOutput signals exclusively in the bass range below approx. 200 Hz\u003c\/li\u003e \u003cli\u003eDual power supply from +\/- 12 V to +\/- 15 V\u003c\/li\u003e \u003cli\u003eSmall circuit board with 3.5 mm jack or RCA input\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThe subwoofer preamplifier with low-pass filter processes audio signals by filtering out and selectively boosting bass frequencies. The module uses the NE5532 operational amplifier, a classic low-frequency amplifier optimized for audio applications. Its 10x amplification and adjustable filter cutoff frequency make it possible to tailor bass reproduction to different room conditions and subwoofer characteristics without affecting high frequencies.\u003c\/p\u003e \u003cp\u003eThe module accepts signals up to 2 V and amplifies them to up to 20 V, so the output signal must remain within the supply voltage range of the connected subwoofer. The low-pass filter suppresses all frequencies above the set cutoff frequency, typically around 200 Hz. This protects the subwoofer from unwanted high-frequency components and reduces interference caused by near-field effects.\u003c\/p\u003e \u003cp\u003eApplications include connecting to existing active speaker inputs, for example when an audio interface or amplifier does not provide a dedicated subwoofer output. In home theater setups, the module provides the bass channel from stereo or multichannel sources. The module can also be used as a pre-stage in analog synthesizer setups with low-frequency modules, where filtering in advance prevents distortion caused by clipping.\u003c\/p\u003e \u003cp\u003eOperation requires a dual, symmetrical power supply of at least +12 V and -12 V; a simple single-ended supply will not work. The inputs are unbalanced (jack or RCA), but the output still requires a power amplifier or an active subwoofer with input sensitivity control. When connecting to sources with higher output power, check the input impedance.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eThe module is intended exclusively for building prototypes and for testing and development purposes. It is not designed for installation in household mains circuits or consumer devices. Observe the requirement for a dual, symmetrical power supply and avoid short circuits at the outputs. If you are unsure about integrating it into audio equipment or powering it, consult a qualified electrician.\u003c\/p\u003e \u003ch4\u003eIncluded in delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x Subwoofer preamplifier NE5532 with low-pass filter, DC 12V-24V\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":65997933379933,"sku":"F23107754","price":4.54,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/subwoofer-vorverstaerker-ne5532-mit-tiefpassfilter-dc-12v-24v-funduino-9722715.png?v=1791494503"},{"product_id":"isd1820-sprachrekorder-playback-modul-inkl-lautsprecher","title":"ISD1820 Voice Recorder Module - 20 s recording, speaker, 5 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eVoice recorder module for recordings of up to 20 seconds\u003c\/li\u003e \u003cli\u003eBuilt-in speaker for playback\u003c\/li\u003e \u003cli\u003eRecording quality: 8 kHz sample rate, mono\u003c\/li\u003e \u003cli\u003eInputs\/outputs, microphone input (analog), 4 digital control pins\u003c\/li\u003e \u003cli\u003ePower supply: 4.5 to 5.5 V\u003c\/li\u003e \u003cli\u003eDesign: compact board with mounted speaker\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis voice recorder module enables simple voice and sound recordings in electronics projects. The device records through its integrated microphone, stores up to 20 seconds of speech or other sounds, and then plays them back through the built-in speaker. It only requires a power supply between 4.5 and 5.5 V, which can easily be powered by the same power supply or battery pack as the control system.\u003c\/p\u003e \u003cp\u003eControl is handled via four digital pins: one for recording, one for playback, and two for function sequencing and status feedback. Since only digital signals are required, the module connects directly to common microcontroller boards. The microphone captures signals in analog form; the internal electronics digitize them at 8 kHz and store them in mono.\u003c\/p\u003e \u003cp\u003eIn projects, the module can be used for talking robots or warning devices that play a recorded message when an event occurs. Interactive art installations and games can also benefit from the ability to capture visitors' speech and play it back later in modified form. The small memory and limited quality make the module unsuitable for music or long speeches; it excels at short, repeated announcements.\u003c\/p\u003e \u003cp\u003eRecordings are stored in internal RAM, not on a memory card. This means all recordings are lost if the power fails, and only one recording can be stored per power cycle. The module itself is sufficient for operation, but it requires an external power supply and a connection to a control board with available output pins.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eThe module is intended exclusively for building prototypes and for testing and development purposes, and is not suitable for installation in household electrical wiring. Make sure the power supply polarity is correct. Work on or near electrical installations must be carried out by qualified electricians; consult a qualified electrician before use if anything is unclear.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x ISD1820 - voice recorder playback module incl. speaker\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":65998242513245,"sku":"F23106536","price":3.67,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/isd1820-sprachrekorder-playback-modul-inkl-lautsprecher-funduino-4675640.png?v=1791495840"},{"product_id":"mini-mp3-player-mp3-tf-16p-v3-0-fur-mikrocontroller","title":"MP3-TF-16P V3.0 MP3 player - microSD up to 32 GB, serial","description":"\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eSupports sampling rates (KHz): 8 \/ 11.025 \/ 12 \/ 16 \/ 22.05 \/ 24 \/ 32 \/ 44.1 \/ 48\u003c\/li\u003e \u003cli\u003eMP3-TF-16P V3.0\u003c\/li\u003e \u003cli\u003eDynamic range support: 90dB\u003c\/li\u003e \u003cli\u003eSNR support: 85dB\u003c\/li\u003e \u003cli\u003eSupports FAT16 and FAT32, microSD cards up to 32GB\u003c\/li\u003e \u003cli\u003eWith multiple control modes (I\/O, serial mode, AD button control)\u003c\/li\u003e \u003cli\u003eCan be connected directly to a speaker\u003c\/li\u003e \u003cli\u003eSupported file formats: \u003cspan style=\"font-family: Arial, Verdana, Helvetica; font-size: 16px;\"\u003emp3, WAV, WMA\u003c\/span\u003e\n\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eHelpful links:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003ca href=\"https:\/\/wiki.dfrobot.com\/DFPlayer_Mini_SKU_DFR0299\" target=\"_blank\" data-link-type=\"external\" data-type=\"linkpicker\"\u003eInstructions (wiki.dfrobot.com)\u003c\/a\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePackage contents:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e1x Mini MP3 Player, DFplayer for microcontrollers\u003c\/li\u003e \u003cli\u003eAn SD card is not included\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":65998357234013,"sku":"FUN-1010563","price":3.11,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/mini-mp3-player-mp3-tf-16p-v30-fuer-mikrocontroller-funduino-3457450.png?v=1791496469"},{"product_id":"lautsprecher-5w-8ω-30x70-mm","title":"Speaker 5 W - 8 Ohm, 30 x 70 mm","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eCompact speaker with 5 W output power\u003c\/li\u003e \u003cli\u003eImpedance: 8 ohms, frequency range: 20–20000 Hz\u003c\/li\u003e \u003cli\u003eDimensions: 30*70 mm, suitable for installation in small enclosures\u003c\/li\u003e \u003cli\u003eRectangular design with mounting holes on the sides\u003c\/li\u003e \u003cli\u003eCan be connected via solder pads or terminals\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis 5-watt speaker is suitable for installation in compact audio projects and devices with limited space. The 8-ohm impedance allows direct connection to common amplifier ICs and sound modules without requiring additional impedance matching. With dimensions of 30*70 mm, the component fits in narrow enclosures.\u003c\/p\u003e \u003cp\u003eThe component reproduces frequencies from 20 to 20000 Hz, providing an audible range for speech and music. Its rectangular design allows flexible positioning in project boxes. Connections can be made via the provided solder pads or terminal contacts.\u003c\/p\u003e \u003cp\u003eApplications include warning devices with acoustic signals, portable audio toys, small amplifiers for testing, playing music from microcontroller projects, and simple voice output systems. For music-quality sound pressure levels, the output is sufficient at distances of up to about two meters.\u003c\/p\u003e \u003cp\u003eNo power supply is required; the speaker operates solely using the output power of the connected amplifier. Ensure the correct polarity when connecting it; overloading the amplifier with excessive voltage can cause failures.\u003c\/p\u003e \u003ch3\u003eSafety information\u003c\/h3\u003e \u003cp\u003eEnsure correct polarity when connecting the component, as incorrect wiring can damage it. This component is intended exclusively for building prototypes and for testing and development purposes. Work on or near electrical installations must be carried out by qualified electricians; consult a qualified electrician before commissioning if in doubt.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x Speaker, 5W, 8Ω, 30x70 mm\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":65998372995421,"sku":"F23107409","price":1.84,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/lautsprecher-5w-8o-30x70-mm-funduino-4697307.png?v=1791495925"},{"product_id":"digitaler-hifi-bass-audioverstarker-bluetooth-kompatibel","title":"Bluetooth 5.0 audio amplifier - 50 W at 4 ohms, bass filter","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eDigital audio amplifier with Bluetooth connectivity for bass and low-frequency playback\u003c\/li\u003e \u003cli\u003eOutput power up to 50 W into a 4-ohm load\u003c\/li\u003e \u003cli\u003eBluetooth 5.0 with aptX support for wireless audio transmission\u003c\/li\u003e \u003cli\u003eDigital signal processing with configurable bass filter\u003c\/li\u003e \u003cli\u003e3.5 mm jack input and RCA connectors for wired sources\u003c\/li\u003e \u003cli\u003ePower supply via USB-C or 12 V power adapter\u003c\/li\u003e \u003cli\u003eCompact design with integrated thermal management\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eA digital Bluetooth audio amplifier connects music sources wirelessly or by cable to active subwoofers or bass monitors. The device processes audio signals digitally and outputs up to 50 W into four-ohm loads, which is sufficient for room applications with subwoofers or active speakers.\u003c\/p\u003e \u003cp\u003eThe Bluetooth 5.0 connection transmits audio losslessly using the aptX codec, while the built-in inputs also allow headphones or RCA devices to be connected. The bass filter can be adjusted via a menu to tailor low frequencies to the room or speaker characteristics. Dual connectivity saves the hassle of switching cables when moving quickly between portable and stationary devices.\u003c\/p\u003e \u003cp\u003eApplications include home theater setups with a separate subwoofer, portable sound systems for events, or music workstations that require precise near-field bass. The module also works as a preamplifier for multiple speakers in adjacent rooms, since several devices can use the same Bluetooth transmitter.\u003c\/p\u003e \u003cp\u003ePower is supplied either via USB-C (for mobile use with power banks up to around 3 A) or via the included 12 V power adapter (for stationary installation). If you want to operate the amplifier permanently with a subwoofer, use the power adapter; for outdoor use or in vehicles with 12 V onboard power, no additional power supply is needed. Speakers with an impedance below 4 ohms put the output under excessive thermal strain.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eThe power adapter supplies 12 V DC and is intended exclusively for operating this device. This product is not intended for installation in household electrical circuits and is solely for building prototypes and for testing and development purposes. Work on or near electrical installations must be carried out by qualified electricians; if you have questions about safe commissioning, consult a qualified electrician before connecting the device.\u003c\/p\u003e \u003ch4\u003ePackage contents\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1 x Bluetooth-compatible amplifier\u003c\/li\u003e \u003cli\u003e1 x remote control\u003c\/li\u003e \u003cli\u003e1 x AC power cable\u003c\/li\u003e \u003cli\u003e1 x DC power cable\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66042951762269,"sku":"F23107805","price":15.07,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/digitaler-hifi-bass-audioverstaerker-bluetooth-kompatibel-funduino-6716740.png?v=1791487051"},{"product_id":"digitaler-stereo-audioverstarker-xh-m531-2x20w","title":"XH-M531 audio amplifier - stereo 2x 20 W, 12 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eDigital stereo audio amplifier with 2*20 W output power\u003c\/li\u003e \u003cli\u003eOperating voltage 12 V DC, external power supply required\u003c\/li\u003e \u003cli\u003eInputs for line-level audio signals (AUX, RCA)\u003c\/li\u003e \u003cli\u003eCompact design with heat sink and PAM8403 amplifier chips\u003c\/li\u003e \u003cli\u003eAdjustable gain via potentiometer on the board\u003c\/li\u003e \u003cli\u003eProtection circuit against overloads and thermal overload\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis digital stereo audio amplifier drives two speakers with up to 20 W of power per channel. It is suitable for portable sound systems, pairs of active speakers, portable music systems, or amplifying audio signals in robotics and automation projects where more complex audio technology would not fit.\u003c\/p\u003e \u003cp\u003eThe module uses line-level inputs and amplifies analog audio signals with integrated PAM8403 chips designed for efficiency. Since the gain can be adjusted using a potentiometer on the board, no external control circuit is needed. The required operating voltage of 12 V must be supplied by a separate power adapter.\u003c\/p\u003e \u003cp\u003eTypical applications range from simple voice transmission in remote-controlled vehicles to audio output in kiosk systems or interactive installations. The module offers a straightforward solution for development projects that need amplified audio signals quickly, without taking up much space.\u003c\/p\u003e \u003cp\u003eUse is limited to low-power applications and laboratory operation. Thermal heating can be expected at higher sound pressure levels or during continuous operation at full power; airflow for cooling may be required depending on the operating conditions. External components needed include a suitable 12 V power adapter and speakers with the appropriate impedance (typically 4 to 8 ohms). Check that the input and output cables are connected correctly before operation.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eThe module is intended exclusively for building prototypes and for testing and development purposes. Observe the correct polarity and voltage when supplying power to prevent damage. If you have questions about correct operation or electrical installation, consult a qualified electrician before commissioning.\u003c\/p\u003e \u003ch4\u003ePackage contents\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1 x XH-M531 Digital Stereo Audio Amplifier 2x20W\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66042955268445,"sku":"F23105761","price":17.28,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/digitaler-stereo-audioverstaerker-xh-m531-2x20w-funduino-5252541.png?v=1791486934"},{"product_id":"digitale-bluetooth-audioverstarkerplatine-stereo-2x-15w","title":"Bluetooth amplifier board - stereo 2 x 25 W, battery, 12 V","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eDigital stereo amplifier board with Bluetooth 5.0 receiver\u003c\/li\u003e \u003cli\u003eOutput power 2 * 25 W at 4 Ω load\u003c\/li\u003e \u003cli\u003eIntegrated lithium-ion battery with USB-C charging port\u003c\/li\u003e \u003cli\u003e12 V or battery power supply, external power supply possible\u003c\/li\u003e \u003cli\u003eCompact design for integration into enclosures or speaker cabinets\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThis digital stereo amplifier board with Bluetooth 5.0 receives audio signals wirelessly and drives two speakers directly. The module combines a receiver, amplifier, and power management on a single board, with no additional components needed in between.\u003c\/p\u003e \u003cp\u003eThe integrated lithium-ion battery enables mobile operation and charges via USB-C, while a connection for external 12 V power sources is provided. Using an external power supply means you don't have to wait for batteries to charge. The amplifier's 2 * 25 W output is sufficient for small to medium-sized speakers in near-field applications, such as portable speakers or multimedia installations in rooms up to about 20 square meters.\u003c\/p\u003e \u003cp\u003eApplications include portable Bluetooth speakers, wireless audio systems for trade show setups, garden music, or as an amplifier component for DIY speaker projects. The module also works reliably in robotics applications or interactive art installations with sound output. Longer operating times require an external power supply or regular battery charging.\u003c\/p\u003e \u003cp\u003eOperation requires a suitable speaker enclosure or an existing pair of speakers. The board needs space inside the enclosure and appropriate cable connections to the driver units. Bluetooth devices must be paired once before music can play.\u003c\/p\u003e \u003ch3\u003eSafety Notice\u003c\/h3\u003e \u003cp\u003eThe lithium-ion battery must not be exposed to extreme heat, moisture, or mechanical damage. The device is intended solely for building prototypes and for testing and development purposes, and is not designed to be connected to household mains power. Consult a qualified electrician if you have questions about the power supply or before putting the device into operation.\u003c\/p\u003e \u003ch4\u003ePackage Contents\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x Digital Bluetooth audio amplifier board, stereo (2x 15W)\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66042955366749,"sku":"F23108386","price":12.45,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/digitale-bluetooth-audioverstaerkerplatine-stereo-2x-15w-funduino-6170174.png?v=1791486931"},{"product_id":"hochleistungs-hifi-digitalverstarker-irs2092s-500w-klasse-d-mono-kanal","title":"IRS2092S Digital Amplifier - Class D, 500 W, Mono","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eDigital Class D amplifier based on the IRS2092S chip with up to 500 W output power\u003c\/li\u003e \u003cli\u003eOperating voltage: 48 V (symmetrical); an external switching power supply is required\u003c\/li\u003e \u003cli\u003eHigh-frequency pulse-width modulation (PWM) reduces heat loss compared with analog amplifiers\u003c\/li\u003e \u003cli\u003eInputs for digital and analog signal sources, outputs for 4 to 8 ohm speakers\u003c\/li\u003e \u003cli\u003eIncludes a heatsink for heat dissipation; supplied as a circuit board without an enclosure\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eA digital power amplifier based on the Class D principle and the IRS2092S IC delivers audio signals to the speaker at up to around 500 W. The component uses pulse-width modulation instead of a traditional linear analog amplifier. An internal switch modulates a high-frequency signal in proportion to the input voltage. This results in significantly less heat loss, allowing the heatsink to be much smaller than would be necessary for comparable linear power.\u003c\/p\u003e \u003cp\u003eThe 48 V operating voltage (symmetrical, with positive and negative rails) requires a suitable external power supply. Anyone building this amplifier must source a switching power supply with this output voltage separately. The outputs support impedances between 4 and 8 ohms, typical for home speakers. On the input side, the module accepts both digital and analog signals, offering flexibility in the choice of signal source.\u003c\/p\u003e \u003cp\u003eThe amplifier is supplied as a circuit board without an enclosure. The attached heatsinks dissipate the heat generated. At full load, active ventilation or thermal planning is required, as passive cooling alone is insufficient under load. This affects its use in enclosed spaces or boxes, where heat dissipation must be considered.\u003c\/p\u003e \u003cp\u003eApplications include active speaker systems, small PA systems, or audiophile home audio systems where compactness is desired without a large linear amplifier. The amplifier can also be used as a base module for custom audiophile projects. Setup requires a regulated 48 V power supply, a suitable signal generator or audio preamplifier, and a plan for heat dissipation.\u003c\/p\u003e \u003ch3\u003eSafety Notice\u003c\/h3\u003e \u003cp\u003eThis product is not intended for installation in household electrical circuits and is suitable only for prototyping, testing, and development purposes. Its high output power generates heat that must be managed with cooling. Work on or near electrical installations supplying power must be carried out by qualified electricians. If in doubt, consult a qualified electrician before commissioning.\u003c\/p\u003e \u003ch4\u003eScope of Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x High-power Hi-Fi digital amplifier IRS2092S, 500W, Class D, mono channel\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66042955792733,"sku":"F23107841","price":16.29,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/hochleistungs-hifi-digitalverstaerker-irs2092s-500w-klasse-d-mono-kanal-funduino-3530619.jpg?v=1791487188"},{"product_id":"hifi-bluetooth-audio-verstarkermodul-tpa3116-dc-12-24v-2x50w-100w","title":"TPA3116 amplifier module - Bluetooth 5.0, 2x 50 W, 24 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eDigital amplifier module for Bluetooth audio with the TPA3116 IC\u003c\/li\u003e \u003cli\u003eAmplifier output: 2 * 50 W at 4 ohms, 2 * 100 W at 2 ohms\u003c\/li\u003e \u003cli\u003eBluetooth 5.0 with aptX support for stable wireless pairing\u003c\/li\u003e \u003cli\u003e24 V DC power supply, limited to this operating voltage\u003c\/li\u003e \u003cli\u003eInputs and outputs on solder pads; supplied without connectors\u003c\/li\u003e \u003cli\u003eCompact assembly for DIY audio devices and repairs\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis amplifier module with the TPA3116 chip is a component-level solution for wireless audio amplification. It receives audio signals via Bluetooth 5.0 and directly drives speakers up to their rated power, without requiring additional audio preamps.\u003c\/p\u003e \u003cp\u003eThe amplifier runs on 24 V DC and delivers up to 100 W of combined power (50 W per channel) into 4-ohm loads, or up to 200 W (100 W per channel) into 2-ohm loads. The operating voltage is fixed at this value; operation at other voltages is not supported. Pairing with Bluetooth sources uses the aptX codec standard, designed for low latency in wireless transmission.\u003c\/p\u003e \u003cp\u003eTypical applications include building portable or stationary Bluetooth speakers, adding Bluetooth connectivity to passive speaker systems, or repairing and upgrading older audio devices with Bluetooth. The compact design fits into small enclosures. One possible application is a DIY party box with two or more of these modules for multichannel operation in a custom wooden enclosure.\u003c\/p\u003e \u003cp\u003eSince the module is supplied without connectors, all connections (power supply, speakers, optional audio input) must be soldered. A 24 V power supply with sufficient current for the desired output must be obtained separately. A lab power supply or industrial-grade power supply is typically used with a board that has no power supply.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eThe module is not intended for installation in household electrical systems and is designed exclusively for building prototypes and for testing and development purposes. The 24 V power supply must have adequately rated protection (fuse or circuit breaker) to protect the module from damage in the event of a fault. If you are unsure about the power supply or speaker matching, consult a qualified electrician.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x TPA3116 3-channel audio amplifier board\u003c\/li\u003e \u003cli\u003e1x 3-pin cable\u003c\/li\u003e \u003cli\u003e5 x potentiometer caps\u003c\/li\u003e \u003cli\u003e1x set of screws\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66044392472925,"sku":"F23107802","price":36.81,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/hifi-bluetooth-audio-verstaerkermodul-tpa3116-dc-12-24v-2x50w100w-funduino-1544511.jpg?v=1791488893"},{"product_id":"audio-verstarkerboard-mit-tda7498","title":"TDA7498 amplifier module - stereo 2 x 100 W, 12-50 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eStereo amplifier board based on the TDA7498\u003c\/li\u003e \u003cli\u003eOutput power 2 * 100 W into a 4 Ω load\u003c\/li\u003e \u003cli\u003eInputs for line-level signals, 3.5 mm jack and RCA connectors\u003c\/li\u003e \u003cli\u003eOperating voltage 12 to 50 V, power supplied via screw terminals\u003c\/li\u003e \u003cli\u003ePWM control for variable volume\u003c\/li\u003e \u003cli\u003eCompact design without external heat sinks; only a PCB cooling pad is required\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis stereo amplifier board uses the high-performance TDA7498 audio IC to deliver up to 200 W of total power from line-level signals. The module processes input signals from smartphones, tablets, or other audio sources and drives passive speakers directly.\u003c\/p\u003e \u003cp\u003eThe amplifier uses PWM technology, which enables variable output power through level control. The board supports input voltages between 12 and 50 V, allowing it to work with both smaller and more powerful power supplies. The two output channels operate independently and can be connected in parallel for mono operation.\u003c\/p\u003e \u003cp\u003eApplications include portable speaker projects, home DJ systems, sound systems for lecture halls or garages, and amplifier stages in Raspberry Pi- or Arduino-based music playback projects. Its wide voltage tolerance is especially useful with 24 V switching power supplies or batteries.\u003c\/p\u003e \u003cp\u003eThe board requires a separate power supply with sufficient current capacity; at full output, 20 A or more may flow. Cooling through contact with the enclosure or by applying thermal compound to the PCB cooling pad is required to prevent the IC from overheating at high power levels. The input impedance is 20 kΩ, making it suitable for standard audio sources.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eThis amplifier board is intended exclusively for building prototypes and for testing and development purposes. In the event of a fault or defect, high currents may flow; work on the power supply must be carried out by qualified electricians. If in doubt, consult a qualified electrician before use.\u003c\/p\u003e \u003ch4\u003ePackage contents\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x Audio amplifier board TDA7498\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66044727066973,"sku":"F23107843","price":16.52,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/audio-verstaerkerboard-mit-tda7498-funduino-9910953.jpg?v=1791488148"},{"product_id":"audioempfanger-digitaler-verstarker-tda7492p-2x-50w-bluetooth-csr4-0","title":"TDA7492P amplifier module - 2x 25 W, Bluetooth 4.0, 12 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eDigital audio receiver and 2*25 W amplifier on one board, Class D design\u003c\/li\u003e \u003cli\u003eBluetooth control, with a 3.5 mm jack input as an alternative\u003c\/li\u003e \u003cli\u003e12 V power supply; can be operated with a lead-acid battery or power adapter\u003c\/li\u003e \u003cli\u003eTDA7492P amplifier IC with thermal shutdown\u003c\/li\u003e \u003cli\u003eBoard dimensions approximately 65*55 mm\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis digital amplifier receives audio signals via Bluetooth or through a 3.5 mm headphone jack and outputs 25 watts per channel to two 4- to 8-ohm speakers. Its Class D design operates with high efficiency and generates less heat than linear amplifiers, allowing for a compact design without elaborate cooling.\u003c\/p\u003e \u003cp\u003eIt operates from a 12 V power source, which can be either a lead-acid battery or an external power adapter. The board has connection holes for the speakers and power supply; the level can be adjusted via the module’s input sensitivity. If the temperature gets too high, the amplifier IC shuts down automatically to protect itself from damage.\u003c\/p\u003e \u003cp\u003eExample applications include portable battery-powered speakers, notification systems in workshops or warehouses, audio output for smaller video installations, or upgrading intercom systems with an amplified microphone output. The module is particularly suitable where Bluetooth is sufficient without an additional amplifier board, or where analog signal sources are already available.\u003c\/p\u003e \u003cp\u003eSpeakers with an impedance of at least 4 ohms are required; lower values reduce the output power or trigger the protection circuits. The power supply must be purchased separately, as must a suitable power adapter if no battery is used. No development environment or programming is required.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eThis module is not intended for installation in household electrical circuits and is solely for prototyping, testing, and development purposes. Observe the polarity when connecting the power supply; at ambient temperatures above 65 °C, thermal protection circuits may activate and limit the output power. Before working near or on existing electrical installations, consult a qualified electrician before use.\u003c\/p\u003e \u003ch4\u003ePackage contents\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x Digital audio receiver amplifier TDA7492P, 50W+50W, Bluetooth CSR4.0\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66044930425181,"sku":"F23107559","price":17.91,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/audioempfaenger-digitaler-verstaerker-tda7492p-2x-50w-bluetooth-csr40-funduino-1198514.png?v=1791488427"},{"product_id":"verstarker-audioverstarker-auf-platine-tda7492-2x50w","title":"TDA7492 audio amplifier - Class-D stereo, 2 x 25 W, 8-26 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eAudio amplifier module with Class-D output stage, equipped with a TDA7492 IC\u003c\/li\u003e \u003cli\u003eOutput power: 2 * 25 W at 4 Ω, 2 * 15 W at 8 Ω\u003c\/li\u003e \u003cli\u003ePower supply: 8 to 26 V DC, regulated internally\u003c\/li\u003e \u003cli\u003eStereo inputs via RCA and 3.5 mm jack\u003c\/li\u003e \u003cli\u003eVolume control via potentiometer on the board\u003c\/li\u003e \u003cli\u003ePWM switching frequency below the audible range, with minimal EMC emissions\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis Class-D audio amplifier drives two speakers independently and delivers up to 25 watts per channel at a 4-Ω impedance. The module runs on any DC power source between 8 and 26 V, with the output power automatically adjusting to the available supply voltage. This makes the amplifier suitable for both regulated bench power supplies and Li-Po batteries.\u003c\/p\u003e \u003cp\u003eThe inputs accept both RCA and jack signals and switch internally. Both inputs can be connected at the same time without interfering with each other. Volume is adjusted from zero to full output using a rotary potentiometer mounted on the board. The IC's overload protection limits distortion when input signals exceed 500 mV.\u003c\/p\u003e \u003cp\u003ePossible applications include building portable speakers powered by Li-Po batteries, upgrading monitors or projectors with improved sound, and building laboratory instruments that make test tones and signal outputs audible. The amplifier can also be used in model vehicles with 12 V electrical systems.\u003c\/p\u003e \u003cp\u003eThe amplifier generates EMC in the switching-frequency range, but this is outside the audible spectrum and below the typical interference range of RF devices. An audio input is required for operation; some RCA sources switch off when there is no audio signal. Mechanically, the module fits standard enclosure boards with a 2.54 mm pitch.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eThe power supply must be galvanically isolated from the mains; this module is not intended for connection to household electrical wiring. The product is intended solely for building prototypes and for testing and development purposes. If you have questions about the power supply or EMC compatibility with other devices, consult a qualified electrician.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x TDA7492 audio amplifier board, 2*50W\u003c\/li\u003e \u003cli\u003e1x cable\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66044930720093,"sku":"F23107569","price":13.36,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/verstaerker-audioverstaerker-auf-platine-tda7492-2x50w-funduino-6744561.png?v=1791488660"},{"product_id":"tda7379-stereo-verstarker-ad828-preamp-2x-38w","title":"TDA7379 stereo amplifier - 2x 38 W at 4 Ohms, AD828 preamp, 12-18 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eReady-made stereo amplifier with preamp stage for audio signals\u003c\/li\u003e \u003cli\u003ePower output: 2*38 W into 4-ohm speakers\u003c\/li\u003e \u003cli\u003eAmplifier stage with AD828 operational amplifier IC\u003c\/li\u003e \u003cli\u003eOperating voltage: 12 to 18 V DC\u003c\/li\u003e \u003cli\u003eEasy connection via RCA inputs and speaker terminals\u003c\/li\u003e \u003cli\u003eFully assembled with populated circuit board\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis stereo amplifier combines an amplifier stage with an AD828 operational amplifier and TDA7379 output-stage IC for two channels. The module accepts line-level signals through RCA inputs and outputs them to commonly available 4-ohm speakers. The integrated preamp electronics process the signals before they drive the speakers.\u003c\/p\u003e \u003cp\u003eThe supply voltage is between 12 and 18 V DC, making it easy to power the unit from bench power supplies or standard 12 V automotive power sources. With 4-ohm speakers, each channel delivers 38 W. Higher speaker impedance noticeably reduces the available power; very low impedances below 4 ohms are not permitted and will damage the output stage.\u003c\/p\u003e \u003cp\u003ePossible applications include multimedia setups such as home theater accessories, small PA systems, amplified speakers, and DIY amplifier enclosure projects. In all cases, the power supply must meet the requirements when the current draw under load reaches two or three amperes.\u003c\/p\u003e \u003cp\u003eA regulated DC power source (12 to 18 V) is required; unregulated power supplies are not sufficient. The board needs a heatsink or a low-speed fan to prevent it from becoming excessively hot during continuous operation. Power supply leads should be sufficiently thick to avoid voltage drops.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eThis amplifier module is not intended for use in household electrical installations. It is designed exclusively for building prototypes and for testing and development purposes. Work on or near the power supply must be carried out by a qualified electrician; if in doubt, consult a qualified electrician before use. Incorrect polarity or overloading can cause a fire.\u003c\/p\u003e \u003ch4\u003eIncluded\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x TDA7379 stereo amplifier module, AD828 preamp, 2x 38W\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66044935602525,"sku":"F23107709","price":6.6,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/tda7379-stereo-verstaerker-ad828-preamp-2x-38w-funduino-6635955.jpg?v=1791488668"},{"product_id":"audioreceiver-modul-5v-mit-4-modi-bluetooth-v2-1-ft-microsd-karte-micro-usb-fm","title":"Bluetooth 2.1 audio receiver module - 5 V, microSD, FM, 4 modes","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eAudio receiver module for 5 V power supply\u003c\/li\u003e \u003cli\u003eBluetooth version 2.1 with four operating modes\u003c\/li\u003e \u003cli\u003eReceiver for wireless audio sources\u003c\/li\u003e \u003cli\u003eLow power consumption in standby\u003c\/li\u003e \u003cli\u003eDirect connection to an amplifier or active speakers\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis audio receiver module enables wireless reception of audio signals via Bluetooth and operates on a supply voltage of 5 volts. It is powered directly by USB ports, battery holders, or standard power supplies and connects to smartphones, tablets, and other Bluetooth-enabled devices. The four different operating modes allow for different audio sources or operating scenarios without reconfiguration.\u003c\/p\u003e \u003cp\u003eThe module outputs its audio signal via an analog output to amplifiers or active speakers. This makes it an interface between a Bluetooth source and existing speaker systems. Power can be saved in standby mode, where consumption drops significantly.\u003c\/p\u003e \u003cp\u003eThe module is suitable for portable speakers, retrofitting car stereos with Bluetooth functionality, stationary hi-fi systems without wireless connectivity, or DIY projects with Raspberry Pi and similar platforms. One specific example would be upgrading an old stereo system by adding Bluetooth reception.\u003c\/p\u003e \u003cp\u003eIn addition to the module, a power supply with a suitable 5 V output is required for operation. The audio output requires an amplifier or active speakers with audio inputs. The Bluetooth reception range is typically about ten meters in open space.\u003c\/p\u003e \u003ch3\u003eSafety information\u003c\/h3\u003e \u003cp\u003eThe module is intended exclusively for building prototypes and for testing and development purposes, and is not suitable for installation in the household electrical circuit. When connecting it to external power supplies or audio amplifiers, ensure correct polarity and signal levels. If you are unsure about integration, consult a qualified electrician before use.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x Audio amplifier module 5V, with 4 modes - Bluetooth V2,1, FT-\/microSD card, Micro-USB, FM\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66044943532381,"sku":"F23107627","price":5.94,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/audioreceiver-modul-5v-mit-4-modi-bluetooth-v21-ft-microsd-karte-micro-usb-fm-funduino-5584351.png?v=1791488423"},{"product_id":"jlh-1969-class-a-hifi-audioverstarker-mot-2n3055-vergoldet","title":"JLH 1969 Class A audio amplifier - 2N3055, gold-plated, soldered and unsoldered","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eClass A tube amplifier design with a discrete amplifier stage\u003c\/li\u003e \u003cli\u003eSeveral versions with different output power per channel\u003c\/li\u003e \u003cli\u003eIron-core output transformer for a wide range of impedance matching\u003c\/li\u003e \u003cli\u003eLow-impedance inputs for direct signal matching\u003c\/li\u003e \u003cli\u003eRequires an external 220 V power source\u003c\/li\u003e \u003cli\u003ePassive cooling with no regulation\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis Class A tube amplifier uses discrete transistors in its final amplification stage to produce a characteristically warm sound. The Class A principle means that the output transistors remain conducting throughout the entire signal cycle, minimizing distortion and enabling linear amplification. This results in higher power consumption and correspondingly greater heat generation, which is dissipated passively through the enclosure surface.\u003c\/p\u003e \u003cp\u003eThe amplifier uses an iron-core output transformer for impedance matching, transforming the high impedance of the amplifier stage to low speaker impedances. This allows it to be matched to a wide range of speakers without additional matching circuits. The inputs are low impedance and expect a suitably dimensioned source signal from preamps or other audio devices.\u003c\/p\u003e \u003cp\u003eTypical applications include home theater installations with high-quality passive speakers, hi-fi systems with separate preamps, and use as a compact power amplifier for record player amplifiers. The device is also used in studio monitoring systems with lower sound pressure levels, where its warm, low-distortion sound is appreciated.\u003c\/p\u003e \u003cp\u003eOperation requires a suitable 220 V power supply, which is not included with the device. Due to the continuous heat generation, ensure free air circulation around the enclosure and maintain clearance from heat-sensitive components or materials. A preamp with an adjustable output or a separate preamplifier is required if the input signal is too weak.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eThe device is not suitable for operation on household power circuits or for installation in unventilated furniture. This product is intended exclusively for building prototypes and for testing and development purposes. It is powered by mains voltage; work on or in the immediate vicinity of the power supply system must be carried out by a qualified electrician. Consult a qualified electrician before commissioning if you have questions about correct installation.\u003c\/p\u003e \u003ch4\u003ePackage contents\u003c\/h4\u003e \u003cp\u003ePackage contents:\u003c\/p\u003e","brand":"Funduino","offers":[{"title":"Unassembled","offer_id":66044980625757,"sku":"F23107840","price":17.5,"currency_code":"EUR","in_stock":true},{"title":"Soldered","offer_id":66045763977565,"sku":"F23107815","price":21.02,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/master-jlh-1969-class-a-hifi-audioverstaerker-mot2n3055-vergoldet-funduino-5887160.png?v=1791488154"},{"product_id":"lotubung-klinke-chinch-jst-und-terminal-adapter","title":"Soldering practice adapter set - jack, RCA, JST, terminal","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eAdapter set for switching between different connector types\u003c\/li\u003e \u003cli\u003eJack, RCA, and JST connections\u003c\/li\u003e \u003cli\u003eTerminal connections for flexible wiring\u003c\/li\u003e \u003cli\u003eEnables prototyping without permanent soldering\u003c\/li\u003e \u003cli\u003eSuitable for laboratory and development setups\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThis adapter set connects different connector standards and is suitable for rapid prototyping in electronics development. Jack, RCA, and JST connections can be coupled to one another, while the terminal connections also allow wires to be connected directly without soldering.\u003c\/p\u003e \u003cp\u003eIn practice, this saves you from frequent soldering during setup. Different sensor modules or power supplies with various connector types can be combined flexibly without having to make new cables. Switching between different types of projects is therefore much faster.\u003c\/p\u003e \u003cp\u003eThe set supports scenarios such as operating multiple sensors with a microcontroller, where each module has its own connector type, or using test equipment with different connection types. It is especially useful for learning projects where soldering skills are still being developed or the focus is on circuit logic rather than manual tasks.\u003c\/p\u003e \u003cp\u003eThe connector types involved must be mechanically compatible. The electrical parameters of the connected components must be checked individually; the adapter set itself does not make any adjustments. For permanent installations, soldering is the more durable solution.\u003c\/p\u003e \u003ch3\u003eSafety Notice\u003c\/h3\u003e \u003cp\u003eThe adapters are intended exclusively for prototyping as well as testing and development purposes. Before connecting different modules, check the voltage levels and current ratings to avoid damage. If you are unsure about electrical compatibility, consult a qualified electrician before use.\u003c\/p\u003e \u003ch4\u003eScope of Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x Soldering Exercise - Audio Module, Input\/Output Adapter\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045090234717,"sku":"F23105770","price":2.08,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/loetuebung-klinke-chinch-jst-und-terminal-adapter-funduino-5523432.png?v=1791488281"},{"product_id":"waveshare-analoges-testboard-fur-ad-da-mcus-mit-eingang-ausgang","title":"Waveshare analog test board - AD\/DA converter with amplifier","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eAnalog test board for microcontrollers with ADCs and DACs\u003c\/li\u003e \u003cli\u003eIntegrated input and output amplifiers for measurement signals\u003c\/li\u003e \u003cli\u003eFor testing and prototype development, with extensive circuitry\u003c\/li\u003e \u003cli\u003eCompatible with common microcontroller boards via standard connectors\u003c\/li\u003e \u003cli\u003eSignal conditioning circuits already included on the board\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThe test board with integrated ADCs and DACs simplifies the development of measurement circuits with microcontrollers. Instead of wiring capacitors, resistors, and operational amplifiers individually, the required signal conditioning circuits are already assembled on the board. This saves setup time and reduces the risk of wiring errors.\u003c\/p\u003e \u003cp\u003eThe amplifiers adapt analog signal levels to the controller’s input voltage range and vice versa. The test board connects directly to a microcontroller via standard connectors, allowing the board and controller to work together without additional wiring.\u003c\/p\u003e \u003cp\u003eIt is intended for prototyping sensor circuits, testing ADCs, or developing control circuits that need to process analog inputs. The board is also useful for checking DAC conversion and signal quality during everyday project work.\u003c\/p\u003e \u003cp\u003eA microcontroller with ADC and DAC functions as well as digital inputs and outputs is required. You will also need a power supply for the board and connected controller, along with jumper wires for external signal sources or load resistors when testing outputs.\u003c\/p\u003e \u003ch3\u003eSafety Notice\u003c\/h3\u003e \u003cp\u003eThe test board is intended exclusively for prototyping, testing, and development. It is not designed for installation in household mains circuits. Work on or near electrical installations must be carried out by qualified electricians; if in doubt, consult a qualified electrician before use.\u003c\/p\u003e \u003ch4\u003ePackage Contents\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x Waveshare Analog Test Board for ADC\/DAC MCUs, with input\/output\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045132144989,"sku":"F23107829","price":7.65,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/waveshare-analoges-testboard-fuer-adda-mcus-mit-eingangausgang-funduino-7895075.png?v=1791487618"},{"product_id":"ad828-vorverstarker-stereoverstarker-modul","title":"AD828 preamplifier module - stereo, 2 channels, ±5 to ±15 V","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eStereo amplifier module with two independent channels for line-level signals\u003c\/li\u003e \u003cli\u003ePower supply: ±5 V to ±15 V\u003c\/li\u003e \u003cli\u003eInputs and outputs with RCA jacks, gain adjustment via potentiometer\u003c\/li\u003e \u003cli\u003eAD828 operational amplifier, 16 MHz bandwidth\u003c\/li\u003e \u003cli\u003eDesigned for use in audio projects and testing\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThe AD828 is a stereo amplifier for line-level audio signals. The module contains two completely independent channels, each of which amplifies a weak input signal, typically 100 mV to 1 V, to higher output levels. The integrated AD828 operational amplifier has a bandwidth of 16 MHz, providing sufficient signal quality for demanding audio applications.\u003c\/p\u003e \u003cp\u003ePower is supplied by bipolar voltages between ±5 V and ±15 V, with symmetrical positive and negative voltages required. Gain is adjusted separately for each channel via a potentiometer. All audio connections use standard RCA jacks. The wide voltage range allows operation in various setups, from battery-buffered circuits to regulated lab power supplies.\u003c\/p\u003e \u003cp\u003eApplications include audio projects such as preamplifiers for microphones or sound pressure level meters, measurement chains with audio signal output, and test stages for analog audio processing. The gain can be adjusted independently for each channel, allowing flexible mixing or level matching of different signal sources.\u003c\/p\u003e \u003cp\u003eA bipolar power supply is required; a positive-only voltage source is not sufficient. RCA plugs must be purchased separately; the jacks are already installed on the module. The potentiometer must be adjusted after assembly.\u003c\/p\u003e \u003ch3\u003eSafety Notice\u003c\/h3\u003e \u003cp\u003eThis module is intended exclusively for building audio test circuits and development projects. It must not be connected to household electrical wiring. Consult a qualified electrician when working on or near the power supply, especially with asymmetric voltage setups.\u003c\/p\u003e \u003ch4\u003ePackage Contents\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x AD828 preamplifier \/ stereo amplifier module\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045138272605,"sku":"F23107756","price":4.08,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/ad828-vorverstaerker-stereoverstaerker-modul-funduino-2040095.png?v=1791487592"},{"product_id":"digitale-audio-verstarkerplatine-5v-2-1-stereo-kanal","title":"Amplifier Board 5 V - Stereo Class-D, 2 x 1 W, I2S","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eDigital stereo amplifier board for 5 V power supply\u003c\/li\u003e \u003cli\u003eOutput power: 2 * 1 W into a 4-ohm load\u003c\/li\u003e \u003cli\u003eInput via 3.5 mm jack\u003c\/li\u003e \u003cli\u003eI2S interface for microcontroller boards\u003c\/li\u003e \u003cli\u003eIntegrated Class-D amplifier with buffer capacitors\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis digital amplifier board drives two speakers or a pair of stereo headphones directly from a microcontroller board's 5 V power supply. The integrated Class-D amplifier delivers up to 1 W of output power per channel into a 4-ohm load, which is sufficient for small speakers or headphones. It is not suitable for loud music playback or sound reinforcement in larger rooms.\u003c\/p\u003e \u003cp\u003eThe module accepts audio signals via a 3.5 mm jack or processes digital I2S data directly from a microcontroller. This eliminates the need for a separate audio codec if the controlling board does not have its own audio output. The amplifier operates without external components, as the required buffer capacitors are already soldered onto the board.\u003c\/p\u003e \u003cp\u003eApplications include voice output and sound effects in automation projects, alarm alerts through small speakers, or audio test playback during troubleshooting. The board is also suitable for portable devices with limited space when only low to moderate volume is required.\u003c\/p\u003e \u003cp\u003eTo operate, the module must be connected to the microcontroller board's 5 V power supply. External speakers must have a suitable impedance of between 4 and 8 ohms. Ensure the polarity is correct when connecting the module, as incorrect wiring can damage the amplifier.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eReversing the power supply polarity will damage the board. This amplifier board is not intended for installation in household electrical wiring and is intended exclusively for building prototypes and for testing and development purposes. Work on or near electrical installations must be performed by qualified electricians; if in doubt, consult a qualified electrician before use.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1 x amplifier board\u003c\/li\u003e \u003cli\u003e3x 2P speaker cables\u003c\/li\u003e \u003cli\u003e1x 3P audio input cable\u003c\/li\u003e \u003cli\u003e1x 2P power cable\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045159440733,"sku":"F23107635","price":7.48,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/digitale-audio-verstaerkerplatine-5v-21-stereo-kanal-funduino-3631929.png?v=1791488837"},{"product_id":"audioverstarker-xh-m120-pam8610-2x10w","title":"XH-M120 Audio Amplifier - PAM8610, 2x 10 W, 5-26 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eTwo-channel audio amplifier with 10 W output power per channel at 4 ohms\u003c\/li\u003e \u003cli\u003eInput voltage: 5 to 26 V, with optimal operation from 12 V\u003c\/li\u003e \u003cli\u003eIntegrated gain (20 dB), fixed setting\u003c\/li\u003e \u003cli\u003eAnalog input via 3.5 mm jack socket\u003c\/li\u003e \u003cli\u003eTwo speaker outputs for 4 to 8 ohm impedance\u003c\/li\u003e \u003cli\u003eBoard with integrated PAM8610 amplifier and active feedback control\u003c\/li\u003e \u003cli\u003eReduced weight thanks to the absence of external filter inductors\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis audio amplifier boosts audio signals from mobile devices, computers, or single-board computers to a level suitable for small to medium-sized speakers. The integrated PAM8610 amplifier module uses pulse-width modulation to convert an analog input signal into two independent channels with up to 10 W per channel for 4-ohm speakers.\u003c\/p\u003e \u003cp\u003eIt is powered by 5 to 26 V, with maximum output power reached at a supply voltage of 12 V or higher. Available output power decreases accordingly at lower voltages. The fixed gain of 20 dB is calibrated on the board and cannot be adjusted later. This allows direct connection to audio sources with standard output levels, without additional amplification electronics.\u003c\/p\u003e \u003cp\u003eThe board is suitable for portable speakers and multimedia application prototypes, such as small music boxes, wireless speakers with a specific radio module, or sound effect outputs for robotics projects. Its passive design without external filter inductors reduces space requirements and vulnerability to impacts.\u003c\/p\u003e \u003cp\u003eAn audio signal is supplied via the 3.5 mm jack socket. Each of the two speaker outputs is designed for impedances between 4 and 8 ohms; if the impedance is too low, the amplifier may overheat. The power supply is connected separately and must provide sufficient current, especially when both channels are operating close to maximum output power.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eOperation at voltages above 24 V requires safe power sources and short-circuit current limiting. This board is intended exclusively for building prototypes and test setups, not for installation in consumer devices or integration into power infrastructure. If you have doubts about integration or the power supply is unclear, consult a qualified electrician before use.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x XH-M120 PAM8610 audio amplifier, 2x10W\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045160685917,"sku":"F23107997","price":4.31,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/audioverstaerker-xh-m120-pam8610-2x10w-funduino-2005847.png?v=1791488833"},{"product_id":"5v-mono-stereo-4-2-bluetooth-audioverstarker-modul","title":"Bluetooth 4.2 Amplifier Module - 5 V, 2x 2 W Stereo or 4 W Mono","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eAudio amplifier module for mono and stereo operation with Bluetooth interface\u003c\/li\u003e \u003cli\u003eOutput power up to 4 W in mono mode, 2 W per channel in stereo mode\u003c\/li\u003e \u003cli\u003e5 V supply voltage, connects directly to microcontroller boards\u003c\/li\u003e \u003cli\u003eBluetooth receiver for wireless audio sources\u003c\/li\u003e \u003cli\u003eStereo jack socket and mono speaker connections provided\u003c\/li\u003e \u003cli\u003eIntegrated amplifier, no external power amplifier required\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis Bluetooth audio module amplifies audio signals from 5 V logic level to speaker power. It receives audio data wirelessly via Bluetooth and outputs it amplified, either through a stereo jack socket or directly to two individual speakers. The integrated amplifier eliminates the need for a separate component, making the board significantly more compact.\u003c\/p\u003e \u003cp\u003eOutput power is up to 4 W in mono mode, which is sufficient for small amplifiers. In stereo mode, each channel delivers 2 W. With a 5 V operating voltage, the module can be connected directly to common microcontroller boards without requiring additional voltage converters.\u003c\/p\u003e \u003cp\u003eTypical applications include portable music playback from a smartphone or tablet, alarm sirens with adjustable volume, notification tones in automated projects, or audio feedback for robotics models. The Bluetooth connection provides a straightforward solution, especially for prototypes that need to communicate with their surroundings acoustically.\u003c\/p\u003e \u003cp\u003eOperation requires a Bluetooth-enabled device such as a smartphone or portable computer. Speakers or headphones must be purchased separately, depending on the desired output. The final output power depends on the impedance of the connected speaker.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eThe module is intended exclusively for building prototypes and for testing and development purposes. It must not be installed in or connected to household mains. If you are unsure about the power supply or correct connection, consult a qualified electrician before use.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x 5V Mono\/Stereo 4.2 Bluetooth audio amplifier module\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045163405661,"sku":"F23105763","price":3.38,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/5v-monostereo-42-bluetooth-audioverstaerker-modul-funduino-9174462.jpg?v=1791488830"},{"product_id":"sprachaufzeichnungs-aufnahmemodul-4-min-batteriebetrieben-3x-aaa","title":"Voice Recording Module - 4 Min, Microphone and Speaker, 3x AAA","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eVoice recording module with up to 4 minutes of storage capacity\u003c\/li\u003e \u003cli\u003eBattery-powered, recording via integrated microphone\u003c\/li\u003e \u003cli\u003ePlayback via built-in speaker\u003c\/li\u003e \u003cli\u003eDigital control via logic levels (TTL-compatible)\u003c\/li\u003e \u003cli\u003eCompact design for mounting on development boards\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis voice recording module records speech and sounds and stores them digitally for later playback. The integrated microphone captures audio signals with sufficient quality for voice prompts and simple sound effects. The storage capacity of up to four minutes is suitable for short messages, announcements, or warning signals.\u003c\/p\u003e \u003cp\u003eThe module is controlled via digital logic levels and is TTL-compatible, so it can be connected directly to common microcontroller boards. Recording and playback start with simple high\/low signals at the control inputs. The integrated speaker plays back the stored recordings; no additional audio amplifiers are required.\u003c\/p\u003e \u003cp\u003eThe module is suitable for warning devices in safety projects that need to play short voice messages, or for interactive installations that respond to user input with recorded announcements. It can also be used in robotics projects, for example to add voice output to a mobile platform. A home automation project can use it to play voice confirmations when certain events occur.\u003c\/p\u003e \u003cp\u003eBattery operation eliminates the need for an external power supply as long as the batteries are sufficiently charged. Check the batteries before longer recording sessions, as operating time depends on their capacity and the operating modes.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eThis module is intended exclusively for building prototypes and for testing and development purposes. Batteries must be inserted correctly and checked regularly to prevent leaks or damage.\u003c\/p\u003e \u003ch4\u003ePackage contents\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x Voice recording \/ recording module (4 min), battery-powered (3x AAA)\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045344285021,"sku":"F23110105","price":9.43,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/sprachaufzeichnungs-aufnahmemodul-4-min-batteriebetrieben-3x-aaa-funduino-6601043.png?v=1791489012"},{"product_id":"hw-772-mp3-autolautsprecher-verstarker-decoderplatine-hw-772-mit-bluetooth-4-1","title":"HW-772 MP3 Amplifier Module - Bluetooth 4.1, 2x 10 W, 12 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eCentralized audio decoding and amplification module for vehicle installations\u003c\/li\u003e \u003cli\u003eDecodes MP3 and WAV files directly from digital sources\u003c\/li\u003e \u003cli\u003eIntegrated power amplifier with up to 2*10 W output power\u003c\/li\u003e \u003cli\u003e12 V DC power supply, also suitable for use in 24 V systems when configured accordingly\u003c\/li\u003e \u003cli\u003eCan be connected via USB or memory card and controlled using a 3-button interface\u003c\/li\u003e \u003cli\u003eSelectable mono or stereo output for directly driving speakers without additional amplification\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis car speaker amplifier with an integrated decoder processes audio files directly in the vehicle, without the need to connect external playback devices. The module decodes MP3 and WAV formats and drives speakers directly, reducing the space required in the car.\u003c\/p\u003e \u003cp\u003ePower is supplied by the vehicle's 12 V electrical system. With up to 2*10 W output power, the module is sufficient for mid-range vehicles and basic installations; an external power amplifier is required for higher demands. It is operated using three buttons for playback, volume, and track selection.\u003c\/p\u003e \u003cp\u003eAudio sources can be memory cards (SD, microSD) or USB connections. Mono or stereo output can be selected depending on the vehicle setup. The module fits standard slot installations and does not require a separate power supply system in addition to the vehicle's electrical system.\u003c\/p\u003e \u003cp\u003eInstallation is limited to vehicles with a 12 V electrical system; consult the manufacturer about 24 V systems. Vehicles with factory-installed safety wiring or active antenna systems may require additional level converters or decouplers. MP3 and WAV files must be copied to the memory card or USB stick before use; file management on the module itself is handled using only the three buttons.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eThis module is not intended for connection to household electrical installations and is solely for building vehicle audio prototypes, as well as for testing and development purposes. Work on or near vehicle electronics must be carried out by qualified electricians; consult a qualified electrician before commissioning if in doubt. Ensure the power supply polarity is correct; reverse polarity will damage the module.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x HW-772 MP3 car speaker amplifier \/ decoder board HW-772 with Bluetooth 4.1, incl. remote control\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045355917661,"sku":"F23107784","price":3.97,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/hw-772-mp3-autolautsprecher-verstaerker-decoderplatine-hw-772-mit-bluetooth-41-funduino-2246827.png?v=1791489048"},{"product_id":"mono-verstarker-audioverstarker-hyx0021b-8002b","title":"HYX0021B mono amplifier - 15 W into 4 ohms, 5-12 V","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eMono amplifier with 15 W output power at 4 ohms\u003c\/li\u003e \u003cli\u003eOperating voltage 5 V to 12 V, easy level adjustment via potentiometer\u003c\/li\u003e \u003cli\u003eSelectable gain of 20 dB to 40 dB\u003c\/li\u003e \u003cli\u003eSingle-supply design, no split supply required\u003c\/li\u003e \u003cli\u003eAudio input via 3.5 mm jack socket or RCA connectors\u003c\/li\u003e \u003cli\u003eCompact PCB form factor, easy to integrate into projects\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThis mono amplifier boosts audio signals from audio devices, microcontroller boards, or embedded systems to an audible volume. With a maximum output power of 15 W into a 4-ohm load, it is used with small speakers, portable audio devices, or demonstration projects.\u003c\/p\u003e \u003cp\u003eThe amplifier uses a single-supply design and requires only a simple DC power supply between 5 V and 12 V. This eliminates the complex power supply needed for split-supply designs. Gain can be adjusted between 20 dB and 40 dB using a potentiometer, enabling volume control without additional components. Audio input is provided via a 3.5 mm jack socket or RCA connectors, depending on the module used.\u003c\/p\u003e \u003cp\u003eIn portable audio systems, the amplifier is used between the audio source and the speaker. Microprocessor projects with sound feedback use it to play signals; the low supply voltage is maintained across all operating modes. Demonstration projects in schools or workshops benefit from easy integration and quick speaker adjustment.\u003c\/p\u003e \u003cp\u003eThe amplifier is unsuitable for operation at voltages below 5 V; likewise, it cannot achieve an output power above 15 W. The final volume depends on the input level and speaker impedance. The power supply and speaker must be purchased separately.\u003c\/p\u003e \u003ch3\u003eSafety Notice\u003c\/h3\u003e \u003cp\u003eThis product is not intended for use in household electrical circuits. It is designed exclusively for building prototypes and for testing and development purposes. Before connecting it to external power supplies with mains voltage, consult a qualified electrician.\u003c\/p\u003e \u003ch4\u003eIncluded in Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x HYX0021B 8002B Mono Amplifier\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045478994269,"sku":"F23107757","price":1.94,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/mono-verstaerker-audioverstaerker-hyx0021b-8002b-funduino-2766104.png?v=1791489495"},{"product_id":"lotubung-zwei-kanal-diy-3wx2-lautsprecher","title":"Soldering practice amplifier - stereo, 2 x 3 W at 4 ohms, 5 V","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eSoldering exercise in the form of a functional two-channel amplifier\u003c\/li\u003e \u003cli\u003e3 W per channel into a 4-ohm load\u003c\/li\u003e \u003cli\u003eStereo inputs for line-level signals\u003c\/li\u003e \u003cli\u003eBuilt on a perforated circuit board; solder joints are part of the project\u003c\/li\u003e \u003cli\u003eRequires an external 5 V DC power supply\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThis is a soldering exercise in the form of an amplifier. By soldering all the components onto the perforated circuit board, you build a two-channel audio amplifier with an output of 3 watts per channel. Beginners can practice soldering real electronic components while building a functional device.\u003c\/p\u003e \u003cp\u003eThe amplifier accepts audio signals through stereo inputs and amplifies them using amplifier ICs or discrete transistor stages to an output of 3 watts per channel. This is enough to drive standard small speakers with a 4-ohm impedance. The perforated circuit board makes the operating principle visible and easy to understand.\u003c\/p\u003e \u003cp\u003ePossible applications include a bookshelf stereo system, an amplifier for portable audio projects, or a desktop speaker system. It can also be used for experiments with speaker replacement or adjustable amplification.\u003c\/p\u003e \u003cp\u003eOperation requires an external 5-volt power supply capable of providing adequate current for two channels at 3 watts each. Speakers must have an impedance of 4 ohms. The project itself offers hands-on training in electronics and soldering.\u003c\/p\u003e \u003ch3\u003eSafety Notice\u003c\/h3\u003e \u003cp\u003eThis device is not intended to be connected to household mains and is designed solely for testing and development purposes. When soldering components, follow the safety regulations for handling soldering equipment. If you have questions about proper assembly, consult a qualified electrician before use. After soldering, check all connections to prevent short circuits.\u003c\/p\u003e \u003ch4\u003ePackage Contents\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x Soldering Exercise - Two-Channel DIY 3Wx2 Speaker, including English instructions\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045482860893,"sku":"F23110117","price":7.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/loetuebung-zwei-kanal-diy-3wx2-lautsprecher-funduino-5770297.png?v=1791490482"},{"product_id":"bluetooth-4-0-audio-empfangermodul-jdy-62-zweikanal","title":"JDY-62 audio receiver - Bluetooth 4.0, stereo, 3.5 mm jack","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eBluetooth audio receiver module for wireless music playback\u003c\/li\u003e \u003cli\u003eDual-channel output for stereo signals\u003c\/li\u003e \u003cli\u003eBluetooth 4.0 with a range of up to 10 m\u003c\/li\u003e \u003cli\u003e3.5 mm audio jacks for active or passive speakers\u003c\/li\u003e \u003cli\u003ePowered via 5 V USB or an external power source\u003c\/li\u003e \u003cli\u003eWireless pairing with smartphones, tablets, and computers\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis Bluetooth audio receiver module receives music streams from compatible devices and outputs them through two separate audio channels. With Bluetooth 4.0, the module connects wirelessly to smartphones, tablets, and computers within a range of approximately 10 meters, without the need to run cables.\u003c\/p\u003e \u003cp\u003eThe two 3.5 mm audio jacks provide separate left and right audio channels. This allows you to connect active speakers with built-in amplifiers or passive speakers via external amplifier modules. This makes stereo playback flexible across a variety of setups.\u003c\/p\u003e \u003cp\u003eThe module is suitable for portable speaker systems that play music from a smartphone, ambient sound installations in rooms, or as an audio source in hobby robotics projects. It can also be integrated into existing audio devices if their inputs are designed for speaker-level voltage.\u003c\/p\u003e \u003cp\u003eThe module is powered by 5 V, either via USB or an external power source. A Bluetooth-enabled device (smartphone, tablet, or computer) that supports audio output is required for operation. Connection to microcontroller boards is possible, but requires additional signal processing for audio output.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eThe module is intended exclusively for building prototypes and for testing and development purposes, and is not designed for installation in household electrical circuits. At operating voltages of 5 V and above, ensure correct polarity and that the power source can supply sufficient current. Work on or near mains voltage must be performed by a qualified electrician.\u003c\/p\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045553049949,"sku":"F23107734","price":3.03,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/bluetooth-40-audio-empfaengermodul-jdy-62-zweikanal-funduino-9417846.jpg?v=1791489143"},{"product_id":"led-audiopegelanzeige-lautstarkemessgerat-blau","title":"LED Audio Level Meter - 50-130 dB(A), 3.5 mm Jack, Blue","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eSound level meter with LED display for audio signals\u003c\/li\u003e \u003cli\u003eMeasures sound pressure levels and displays them on a blue LED bar\u003c\/li\u003e \u003cli\u003eFrequency range: 20 Hz to 20 kHz\u003c\/li\u003e \u003cli\u003eMeasurement range: 50 to 130 dB(A)\u003c\/li\u003e \u003cli\u003eConnection via 3.5 mm jack plug\u003c\/li\u003e \u003cli\u003ePowered via USB or battery\u003c\/li\u003e \u003cli\u003eReal-time display with no delay\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eAn LED audio level indicator sound level meter visualizes sound pressure levels with a blue LED bar. The device captures audio signals via a 3.5 mm jack plug across the audible spectrum from 20 Hz to 20 kHz and displays the measured values in the range of 50 to 130 dB(A) in real time. It can be powered via USB or battery, depending on which option is more practical on site.\u003c\/p\u003e \u003cp\u003eThe blue LED bar responds immediately to changes in level, making volume fluctuations directly visible. The device is suitable for working on audio equipment, adjusting microphone systems, or quickly checking sound levels at various locations. Calibration or reference measurements with specialized measuring equipment are still necessary when higher accuracy is required.\u003c\/p\u003e \u003cp\u003eThe device can be powered via USB or battery; the choice depends on the location and the intended operating time.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eThis device is intended exclusively for testing and development purposes and is not suitable for installation in household electrical circuits. When powering it via USB, ensure you use a safe power source. If in doubt, consult a qualified electrician before use.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x LED audio level indicator - blue\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045617078621,"sku":"F23107625","price":6.8,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/led-audiopegelanzeige-lautstaerkemessgeraet-blau-funduino-2609324.jpg?v=1791490190"},{"product_id":"bluetooth-audiomodul-5v-stereo","title":"Bluetooth audio module - stereo 2x 3 W, 5 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eBluetooth audio module for wireless playback of music and speech\u003c\/li\u003e \u003cli\u003e5 V operating voltage, connects directly to microcontroller boards\u003c\/li\u003e \u003cli\u003eStereo output with up to 2*3 W of power\u003c\/li\u003e \u003cli\u003eI2C and serial interfaces for control\u003c\/li\u003e \u003cli\u003eIntegrated lithium battery for powering the Bluetooth chip\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis Bluetooth audio module enables wireless playback of audio content through speakers or headphones. The receiver connects wirelessly to smartphones, tablets, or other Bluetooth transmitters and outputs the signal without additional wiring.\u003c\/p\u003e \u003cp\u003eThe 5 V operating voltage allows direct connection to common microcontroller boards such as Arduino or similar systems. The I2C or serial interface lets you adjust the volume, change tracks, or check the pairing status. The stereo output delivers up to 2*3 W of power, enough for small to medium-sized speakers or headphones in your project.\u003c\/p\u003e \u003cp\u003eUse cases range from music playback in robotics projects and voice output in smart home prototypes to audio feedback in interactive installations. The Bluetooth chip’s integrated battery needs occasional recharging, but can bridge brief power outages.\u003c\/p\u003e \u003cp\u003eSpeakers or headphones with a suitable plug are required for operation. The range is typically 10 to 20 meters, depending on obstacles and sources of interference nearby. Connection is made via pin headers or screw terminals, depending on the model variant.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eThis module is intended exclusively for building prototypes and for testing and development purposes, and is not suitable for connection to household electrical circuits. Work on or near electrical installations must be performed by qualified electricians. If you have questions about the power supply or connecting the module to power supplies, consult a qualified electrician before use.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x Bluetooth audio module, 5V, stereo\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045626089821,"sku":"F23105764","price":3.77,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/bluetooth-audiomodul-5v-stereo-funduino-3839741.jpg?v=1791489749"},{"product_id":"mini-audioverstarker-mit-bluetooth","title":"Mini audio amplifier - Bluetooth, 2 x 3 W at 4 Ohms, 5 V","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eAudio amplifier with Bluetooth receiver for wireless streaming in prototypes and development setups\u003c\/li\u003e \u003cli\u003eOutput power of 3 W per channel into a 4-ohm load\u003c\/li\u003e \u003cli\u003eAmplifies Line-In signals from 100 mV\u003c\/li\u003e \u003cli\u003e5 V power supply via USB or external battery\u003c\/li\u003e \u003cli\u003eI2C remote control of volume level possible\u003c\/li\u003e \u003cli\u003eSelectable mono or stereo operation\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eAn audio amplifier with Bluetooth reception is designed for setups that need to play sound from mobile devices without a cable connection. The module wirelessly decodes incoming audio signals and amplifies them to a usable output of up to 3 W per channel when connected to a 4-ohm load. This makes it suitable for speakers with a sound pressure level of around 85 to 90 dB.\u003c\/p\u003e \u003cp\u003eThe amplifier requires input signals of at least 100 mV to operate. Weaker signals from audio interface line outputs must be preamplified. The Bluetooth connection uses the LE standard and is established automatically when a compatible device comes within a range of about 10 m. The volume can be adjusted using the module's button controls or via I2C commands, enabling integration into control systems.\u003c\/p\u003e \u003cp\u003eThe module operates exclusively on 5 V DC. If you want to use external batteries, make sure to use a regulated 5 V regulator. The module itself does not include a power supply. Applications range from wireless speakers for test setups and audio playback in mobile robots to notification systems that play voice or alarm signals. A typical application is adding audio output to a multisensor development board without having to run cables to mobile devices.\u003c\/p\u003e \u003cp\u003eThe available power supply is important. A 5 V supply capable of at least 1 A is required for continuous operation at higher volume. If you are working only with 3.3 V systems, you need a voltage converter. The module is not suitable for installation in devices connected to mains voltage.\u003c\/p\u003e \u003ch3\u003eSafety Notice\u003c\/h3\u003e \u003cp\u003eThis module is intended exclusively for building prototypes and for testing and development purposes; it is not suitable for installation in household electrical circuits. Consult a qualified electrician when using power supplies above 5 V. Work on or near electrical installations must be carried out by qualified electricians.\u003c\/p\u003e \u003ch4\u003eScope of Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x Mini audio amplifier for Bluetooth 4.0\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045626122589,"sku":"F23107689","price":4.08,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/mini-audioverstaerker-mit-bluetooth-funduino-3097570.jpg?v=1791489741"},{"product_id":"audio-verstarker-tda7377-2-1-kanal","title":"TDA7377 audio amplifier - 2 x 41 W at 4 Ohms, 8-18 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eIntegrated audio amplifier for stereo playback or two mono channels\u003c\/li\u003e \u003cli\u003eOutput power: 2* 41 W at 4 ohms or 2* 25 W at 8 ohms\u003c\/li\u003e \u003cli\u003eSupply voltage: 8 to 18 V DC\u003c\/li\u003e \u003cli\u003eInput sensitivity: 500 mV for full output\u003c\/li\u003e \u003cli\u003eCompact 15-pin DIP package for easy mounting on circuit boards\u003c\/li\u003e \u003cli\u003eOnly two external capacitors and a heat sink required\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThe TDA7377 is an integrated audio amplifier that provides two fully independent channels with up to 41 watts of output power per channel into 4-ohm speakers. The same pins can instead be configured as a mono channel with double the power. The chip operates with a supply voltage between 8 and 18 volts, making it suitable for battery-powered devices as well as power supplies used in mobile or hobby applications.\u003c\/p\u003e \u003cp\u003eInput sensitivity is around 500 millivolts for full output, allowing it to be connected directly to the outputs of microphone preamps, smartphones, or line-level audio sources. The IC requires only two external capacitors for stabilization, significantly reducing circuit complexity. A passive heat sink is required, especially at higher output levels, to ensure heat dissipation.\u003c\/p\u003e \u003cp\u003eThe amplifier is suitable for portable speakers, compact guitar amplifiers, active speakers, motorcycle and car audio systems, as well as hobby instruments with integrated speaker systems. In DIY projects, the DIP package also allows mounting on prototyping boards without specialized manufacturing equipment.\u003c\/p\u003e \u003cp\u003eThe TDA7377 is supplied as a bare IC without enclosure or functional optimizations. For operation, a regulated power supply within the specified voltage range and suitable input signals must be provided. The maximum output power depends on the connected speaker impedance and the available supply voltage.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eThe IC can generate considerable heat at full load; a heat sink is necessary and must be protected against contact with the enclosure using insulating material if metal parts are used. This product is intended solely for building prototypes and for testing and development purposes. It is not intended for installation in household mains circuits. If in doubt, consult a qualified electrician before commissioning.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x TDA7377 audio amplifier, 2.1-channel\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045626417501,"sku":"F23107844","price":11.1,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/audio-verstaerker-tda7377-21-kanal-funduino-8659845.png?v=1791489752"},{"product_id":"digitales-bluetooth-verstarkermodul-30w-dy-ap3001-dc-8v-24v-mono","title":"DY-AP3001 amplifier module - Bluetooth 5.0, 30 W, 8-24 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eDigital audio amplifier module with 30 W output power\u003c\/li\u003e \u003cli\u003eBluetooth 5.0 for wireless audio sources\u003c\/li\u003e \u003cli\u003eInputs for line-in and optical TOSLINK signals\u003c\/li\u003e \u003cli\u003eEnergy-efficient digital amplification with a Class-D power amplifier\u003c\/li\u003e \u003cli\u003eRequires a 24 V power supply\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis digital amplifier module combines Bluetooth connectivity with a compact design for small to medium-sized speakers and active systems. It receives audio signals wirelessly via Bluetooth 5.0 and amplifies them to up to 30 W of output power, with selectable stereo or mono operation. It also provides two wired inputs: a line-in connection for analog sources and an optical TOSLINK input for digital audio signals from computers or other devices.\u003c\/p\u003e \u003cp\u003eClass-D amplifier technology delivers high efficiency and low power consumption. An external 24 V power supply is required, as the module cannot be powered via USB. The device is ready to use automatically after being switched on and updates its firmware wirelessly.\u003c\/p\u003e \u003cp\u003eThe module is suitable for multimedia speakers, active speakers in home office setups, small PA systems for events, or as an upgrade for passive speakers. It is especially useful when several audio signals need to be combined without cables, for example when switching between music from a smartphone via Bluetooth and a video conference from a computer via an optical signal.\u003c\/p\u003e \u003cp\u003eA separate 24 V power supply with sufficient current capacity must be provided for operation. The optical input jack requires compatible digital audio sources. An external power supply socket is not included.\u003c\/p\u003e \u003ch3\u003eSafety information\u003c\/h3\u003e \u003cp\u003eThe module is intended exclusively for building prototypes and for testing and development purposes; it is not intended for installation in the household electrical system. The external power supply must meet the module’s requirements and be short-circuit protected. If you have any questions about the power supply or notice any damage, consult a qualified electrician before use.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cp\u003e1x DY-AP3001 Digital Amplifier Module, DC 8V-24V, Mono Sound\u003c\/p\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045626581341,"sku":"F23105769","price":3.77,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/digitales-bluetooth-verstaerkermodul-30w-dy-ap3001-dc-8v-24v-mono-funduino-9960355.png?v=1791489860"},{"product_id":"mp3-abspielgerat-diy-set-ahnlich-wie-toniebox-mit-begleitmaterial","title":"Funduino MP3 player kit - offline, SD card, supplementary materials","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eKit for a portable MP3 player that works without an internet connection\u003c\/li\u003e\n\u003cli\u003eStore audio files on an SD card or in built-in storage\u003c\/li\u003e\n\u003cli\u003eEasy operation using physical buttons or sensors, with no display\u003c\/li\u003e\n\u003cli\u003ePowered by a rechargeable battery with several hours of operating time\u003c\/li\u003e\n\u003cli\u003e3.5 mm audio output or built-in speaker\u003c\/li\u003e\n\u003cli\u003eNo internet required; offline playback\u003c\/li\u003e\n\u003cli\u003eAssembly requires soldering and basic electronics knowledge\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe MP3 player is supplied as a kit and works entirely offline. Once assembled, it plays audio files transferred to an SD card beforehand. It is operated using switches or buttons on the device, with no display or internet connection needed.\u003c\/p\u003e\u003cp\u003eThe device's core is an MP3 decoder module that decodes compressed audio files and passes them on to the amplifier. The battery supplies power to all components; operating time depends on its capacity and power consumption. Since no online functions are required, there is no need for a network connection.\u003c\/p\u003e\u003cp\u003eTypical uses include children's audiobooks that play stories independently, or voice announcements in model railway layouts and other projects. Another use is providing sound in smaller rooms without relying on Wi-Fi. The device can also serve as a basis for learning projects, helping users follow the steps from circuit design and soldering through to commissioning.\u003c\/p\u003e\u003cp\u003eAssembly requires a soldering iron, flux, and solder, unless these are already included in the kit. Audio files are transferred to the SD card using a computer; common file types include MP3, WAV, or OGG, depending on the decoder type. The capacity of the built-in or expandable storage determines how many files can be stored. If the battery is damaged, it may need to be purchased separately.\u003c\/p\u003e\u003ch3\u003eSafety Notice\u003c\/h3\u003e\u003cp\u003eLithium batteries must not be overcharged or used in extreme heat. This device is designed solely for building prototypes and for testing and development purposes; it is not intended for connection to household mains power. If you are unsure about safe wiring or commissioning, consult a qualified electrician before starting.\u003c\/p\u003e\u003ch4\u003eScope of Delivery\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1* Funduino UNO R3\u003c\/li\u003e\n\u003cli\u003e1* 170P Breadboard\u003c\/li\u003e\n\u003cli\u003e1* 8 Ohm, 0.5W speaker\u003c\/li\u003e\n\u003cli\u003e1* RFID KIT\u003c\/li\u003e\n\u003cli\u003e1* Mini MP3 Player, MP3-TF-16P\u003c\/li\u003e\n\u003cli\u003e1* SD memory card\u003c\/li\u003e\n\u003cli\u003e3* 2-pin buttons, 12x12x6\u003c\/li\u003e\n\u003cli\u003e1* set of 40 breadboard wires, 20 cm (m\/m)\u003c\/li\u003e\n\u003cli\u003e1* set of 40 breadboard wires, 20 cm (f\/m)\u003c\/li\u003e\n\u003cli\u003e1* set of 100 resistors (4x 1000 Ohm required)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045628383581,"sku":"F23110003","price":34.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/mp3-abspielgeraet-diy-set-aehnlich-wie-toniebox-mit-begleitmaterial-funduino-2579813.png?v=1791489872"},{"product_id":"digitale-audio-verstarkerplatine-tpa3116d2-dc12v-24v-2-1-kanal-2x50w-100w-subwoofer","title":"TPA3116D2 amplifier module - 2.1-channel, 2x 50 W + 100 W, 12-24 V","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eDigital amplifier board with integrated TPA3116D2 IC for audio output\u003c\/li\u003e \u003cli\u003eOperating voltage: 12 V DC, max. 100 W output power (4 ohms, mono channel)\u003c\/li\u003e \u003cli\u003eInput impedance: 20 kOhm, line-level input (max. 2 V RMS)\u003c\/li\u003e \u003cli\u003eSelectable stereo or mono operating mode\u003c\/li\u003e \u003cli\u003eCompact board with power connector and RCA input, supplied without power adapter\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eAn audio amplifier based on the TPA3116D2 is suitable for digitally powering active speakers or driving passive speakers with an impedance of up to 4 ohms. It operates from a 12 V DC power source, which must be purchased separately. The module processes line-level audio signals from sources such as microcontroller boards or audio DACs. The amplification can be configured using external resistors; the board therefore has solder pads for adapting it to the specific project.\u003c\/p\u003e \u003cp\u003eThe integrated amplifier IC delivers a maximum power of about 100 W into 4-ohm loads in mono-channel operation. The module is also available for stereo applications. A heatsink is required for sustained high-power operation to dissipate heat. If the input signal falls below the 20 mV threshold, the automatic mute function activates and reduces noise.\u003c\/p\u003e \u003cp\u003eApplications include desktop audio systems, amplifying devices for portable speakers, notification sounds in embedded projects, and educational audio experiments. The module can also be used as an amplification stage in larger audio systems, connected between a signal processor and a speaker. The board accepts stereo signals from single-board computers or sound cards with line-level outputs, without preamplification.\u003c\/p\u003e \u003cp\u003eA stable 12 V DC power source with sufficient current capacity is required, around 8 A when operating at full output power. The RCA input accepts mono or stereo signals up to a maximum of 2 V RMS; higher levels require a voltage divider. A heatsink must be mounted on the amplifier board for intensive use to prevent overheating.\u003c\/p\u003e \u003ch3\u003eSafety Notice\u003c\/h3\u003e \u003cp\u003eThe board is intended exclusively for prototype construction and testing and development purposes; it is not suitable for operation with mains input voltages. When connecting an external power supply, polarity must be observed, as incorrect polarity will cause the module to fail immediately. Before operation, ensure that the power supply and speaker load are connected correctly. Consult a qualified electrician if you have questions about installation and operation.\u003c\/p\u003e \u003ch4\u003eScope of Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x Digital audio amplifier board TPA3116D2, DC12V-24V,  2.1-channel, 2x50W+100W (subwoofer)\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045635887453,"sku":"F23107814","price":12.47,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/digitale-audio-verstaerkerplatine-tpa3116d2-dc12v-24v-21-kanal-2x50w100w-subwoofer-funduino-5647836.jpg?v=1791489958"},{"product_id":"xyw-wrbt-bluetooth-5-0-audio-empfanger-mit-fernbedienung","title":"XYW-WRBT audio receiver - Bluetooth 5.0, 3,5 mm jack, remote control","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eBluetooth audio receiver with Bluetooth 5.0 standard\u003c\/li\u003e \u003cli\u003eRemote control for volume adjustment and playback control\u003c\/li\u003e \u003cli\u003e3.5 mm jack output for connecting to amplifiers or active speakers\u003c\/li\u003e \u003cli\u003eBattery or USB power supply\u003c\/li\u003e \u003cli\u003eRange up to 10 meters in open space\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis Bluetooth audio receiver enables wireless music playback from smartphones, tablets, or computers on existing audio systems. The Bluetooth 5.0 standard provides a reliable connection over a distance of about 10 meters and works with all common devices that support Bluetooth audio.\u003c\/p\u003e \u003cp\u003eThe receiver converts the Bluetooth signal into an analog audio signal, which is sent via the 3.5 mm jack output to an amplifier, active speaker system, or AV receiver. The included remote control lets you adjust the volume and control playback without having to pick up the source device.\u003c\/p\u003e \u003cp\u003eThe receiver is useful anywhere existing audio systems without Bluetooth need to be upgraded, such as living rooms with older amplifiers, offices for wireless music while working, or as a simple audio module in a car sound system. Art installations and restaurants also benefit from the flexible placement of the music source.\u003c\/p\u003e \u003cp\u003eIt can be powered either by a USB cable or two AA batteries; both options are included. The range is noticeably reduced by walls and obstacles, so the transmitter and receiver should be in the same room or have a direct line of sight.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eThe device is intended exclusively for testing and development purposes and private use. It must be powered only via USB or batteries; connection to household mains power is not permitted. Consult qualified electricians if you have questions about integrating it into speaker or amplifier systems.\u003c\/p\u003e \u003ch4\u003ePackage contents\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x XYW-WRBT Bluetooth 5.0 audio receiver with remote control\u003c\/li\u003e \u003cli\u003eNote: Cable \/ power supply \/ battery (lithium\/CR2025) not included!\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045637034333,"sku":"F23107991","price":4.2,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/xyw-wrbt-bluetooth-50-audio-empfaenger-mit-fernbedienung-funduino-4113907.jpg?v=1791489916"},{"product_id":"bluetooth-audioempfanger-4-1-decoderboard-xy-bt-mini","title":"XY-BT-Mini Bluetooth audio receiver - 4.1, 3,5 mm jack, 5 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eBluetooth audio receiver for wireless playback of music on amplifiers or active speakers\u003c\/li\u003e \u003cli\u003eDecodes A2DP audio signals and outputs them via a 3.5 mm jack or 4-pin XLR connector\u003c\/li\u003e \u003cli\u003ePowered via a 5 V USB socket; can also be used as a mobile device with a battery\u003c\/li\u003e \u003cli\u003eRange of up to 10 meters in open space, with a secure connection using Bluetooth standard 4.1\u003c\/li\u003e \u003cli\u003eNo additional connections or control inputs required; fully automatic operation from power-on to playback\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eA Bluetooth audio receiver wirelessly decodes music data from smartphones and tablets and feeds it into existing stereo equipment. The board processes A2DP audio signals, separating the wireless connection from the audio output. This makes it possible to upgrade supported audio amplifiers and passive speaker systems without modifying their electronics.\u003c\/p\u003e \u003cp\u003eOperation requires a 5 V DC USB power supply. Battery-powered solutions are automatically detected and connected directly when connected to a buffered 5 V power supply, so no manual pairing is needed after power-on. The range of around 10 meters is sufficient for living room setups, but is significantly shorter than that of long-range wireless standards.\u003c\/p\u003e \u003cp\u003eTypical applications include adding Bluetooth reception to older stereo systems, wireless music playback in hobby workshops or offices, and integration into DIY audio systems with an external power supply. A mobile device can connect to multiple boards; conversely, each board can accept only one transmitter at a time.\u003c\/p\u003e \u003cp\u003eThe board is supplied with standard connection options. Depending on the application, a separate USB power adapter must be purchased if the board is not powered continuously from a wall outlet. Audio quality conforms to the Bluetooth specification and is therefore inferior to lossless wired transmission.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eThe board is not intended for connection to the household mains or for installation in machines or electrical systems. It is intended exclusively for prototype development, testing, and development purposes. If you are unsure, work on power supplies and high-frequency systems should be carried out by a qualified electrician before commissioning.\u003c\/p\u003e \u003ch4\u003ePackage contents\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x Bluetooth audio receiver 4.1 \/ decoder board (XY-BT-Mini)\u003c\/li\u003e \u003cli\u003e1x infrared remote control\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045640442205,"sku":"F23107743","price":2.53,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/bluetooth-audioempfaenger-41-decoderboard-xy-bt-mini-funduino-1047640.png?v=1791490435"},{"product_id":"mini-bluetooth-audioverstarker-ct14-5w-5w","title":"CT14 Bluetooth audio amplifier - 2x 5 W, 5 V, 3.5 mm jack","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eCompact audio amplifier with Bluetooth connection and 5 W output power per channel\u003c\/li\u003e \u003cli\u003eStereo operation with two independent channels\u003c\/li\u003e \u003cli\u003e5 V operating voltage via USB Micro socket\u003c\/li\u003e \u003cli\u003e3.5 mm jack input for wired sources\u003c\/li\u003e \u003cli\u003eIntegrated volume control\u003c\/li\u003e \u003cli\u003eSuitable for rooms of approximately 20 m² with a mono subwoofer\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eA compact Bluetooth audio amplifier with a total output power of 10 W drives speakers or headphone outputs. The two channels, each with 5 W of power, operate independently and support both stereo playback and connection to separate mono applications.\u003c\/p\u003e \u003cp\u003eThe device connects wirelessly to smartphones, tablets, and other Bluetooth audio devices. It also has a 3.5 mm jack input for connecting wired audio sources. The volume is controlled using an integrated potentiometer. This also lets you adjust already amplified signals or headphone outputs to the correct level.\u003c\/p\u003e \u003cp\u003eIt can be used wherever portable or flexible audio output is needed. Combine it with a small passive speaker to create a portable Bluetooth radio. In projects with single-board computers or microcontroller boards, the module can provide wireless audio output without the need to build additional amplifier circuits. The amplifier also reliably boosts weak headphone outputs.\u003c\/p\u003e \u003cp\u003ePower is supplied at 5 V via a USB Micro socket, so standard USB power adapters or power banks can be used as the power source. A suitably rated power supply is required for operation. The output power of 5 W per channel limits its use for larger spaces; for room sound reinforcement beyond approximately 20 m², for example, additional external amplifiers are needed.\u003c\/p\u003e \u003ch3\u003eSafety Notice\u003c\/h3\u003e \u003cp\u003eThe device is not intended for connection to or use as part of an electrical installation. It is intended exclusively for building prototypes and for testing and development purposes. If you have questions about integrating it correctly into larger systems, particularly when powering it from mains-connected sources, consult a qualified electrician before use.\u003c\/p\u003e \u003ch4\u003ePackage Contents\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x Mini Bluetooth audio amplifier CT14, 5W+5W\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045641982301,"sku":"F23107638","price":3.97,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/mini-bluetooth-audioverstaerker-ct14-5w5w-funduino-1622449.png?v=1791490621"},{"product_id":"audioverstarker-pam8403-2x-3w-5v-klasse-d","title":"PAM8403 audio amplifier - class D, 2x 3 W, 5 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eDigital audio amplifier with Class D technology, 2*3 W output power at 4 ohms\u003c\/li\u003e \u003cli\u003e5 V operating voltage, two channels for stereo playback\u003c\/li\u003e \u003cli\u003eInput via 3.5 mm jack or alternate pin-header connection\u003c\/li\u003e \u003cli\u003eVery low power consumption thanks to the Class D output stage, with minimal heat generation\u003c\/li\u003e \u003cli\u003eCompact assembly for building portable or mobile audio projects\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis digital audio amplifier based on a PAM8403 IC delivers 2*3 W output power with a 4-ohm speaker and operates directly at the standard operating voltage of 5 V. The Class D output stage ensures that very little energy is lost as heat, making the module ideal for battery- or USB-powered projects.\u003c\/p\u003e \u003cp\u003eThe audio signal is supplied via a 3.5 mm jack socket or alternative solder pins and must be connected to an audio output on a microcontroller board, a single-board computer or a sound card. The two output channels drive the speakers independently, with each channel rated for a maximum of 3 W.\u003c\/p\u003e \u003cp\u003eApplications include portable music playback from mobile phones or microcontroller boards, simple audio alarm systems, speech output for robotics projects, or adding audio playback to a single-board computer. For example, this module can be used to add a sound module to a motion detector that plays a warning when triggered.\u003c\/p\u003e \u003cp\u003eThe speakers must have an impedance of at least 4 ohms. The signal input requires either an audio output with a standard level range (up to about 1 V) or the ability to generate PWM signals directly from the microcontroller. For battery-powered devices, the power supply should provide a stable 5 V output.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eThis module is intended exclusively for building prototypes and for testing and development purposes. For continuous loads or higher currents, the power supply must be adequately rated; overloading will cause damage. Work on or near power lines must be carried out by qualified electricians.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x PAM8403 audio amplifier, 2x 3W, 5V, Class D\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045644636509,"sku":"F23107827","price":1.16,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/audioverstaerker-pam8403-2x-3w-5v-klasse-d-funduino-1973654.jpg?v=1791491594"},{"product_id":"hxj8002-mini-audio-verstarkermodul-dc-2-0-5-5-1x-3w","title":"HXJ8002 amplifier module - mono audio amplifier, 2-5.5 V","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eCompact audio amplifier for line-level inputs up to 2.5 V\u003c\/li\u003e \u003cli\u003eOutput power of 1 W at 8 ohms\u003c\/li\u003e \u003cli\u003ePowered by 5 V DC, low power consumption\u003c\/li\u003e \u003cli\u003eMono output stage with a single speaker connection\u003c\/li\u003e \u003cli\u003eIC-based circuit design for a space-saving layout\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThis mini audio amplifier module amplifies audio signals from line-level sources for use with small speakers. It is powered by the standard 5 V operating voltage, allowing direct integration into microcontroller projects without requiring a separate power supply. Its low power consumption makes it ideal for battery-powered or energy-constrained applications.\u003c\/p\u003e \u003cp\u003eThe module amplifies input signals up to a maximum of 2.5 V and outputs the power to an 8-ohm speaker. The output power of about 1 W is sufficient for small playback applications, but not for large-area sound reinforcement or high volume levels. The module requires an analog audio signal at its input; digital sources require an upstream digital-to-analog converter.\u003c\/p\u003e \u003cp\u003eUse cases include sound output for alarm systems, acoustic feedback in robotics projects, and simple voice output in embedded systems. The module is also used in portable music players with small speaker options, as long as its modest output power is sufficient.\u003c\/p\u003e \u003cp\u003eThe module is powered by a 5 V supply and requires an analog signal output from an audio source. Input-level conversion is not required because the maximum input level of 2.5 V is below the typical line level and must be adjusted accordingly or reduced using a voltage divider if higher levels are present.\u003c\/p\u003e \u003ch3\u003eSafety Notice\u003c\/h3\u003e \u003cp\u003eThe module is not intended for installation in household electrical circuits or professional audio equipment. It is intended solely for prototyping, testing, and development. If in doubt, consult a qualified electrician before use.\u003c\/p\u003e \u003ch4\u003eScope of Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x HXJ8002 Mini Audio Amplifier Module, DC 2.0-5.5, 1x 3W\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045650501981,"sku":"F23107688","price":1.47,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/hxj8002-mini-audio-verstaerkermodul-dc-20-55-1x-3w-funduino-7576676.png?v=1791491684"},{"product_id":"audioverstarker-mini-verstarker-pam8403-2-kanal-3w-5v","title":"PAM8403 audio amplifier - 2-channel, 2.5-5.5 V, 3.5 mm jack","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eSmall 2-channel audio amplifier with integrated PAM8403 chip\u003c\/li\u003e \u003cli\u003eOutput power up to 5 W per channel at 4 ohms\u003c\/li\u003e \u003cli\u003eOperating voltage 2.5 to 5.5 V\u003c\/li\u003e \u003cli\u003eAnalog input via 3.5 mm jack socket\u003c\/li\u003e \u003cli\u003eSpeaker connection points (either polarity can be used)\u003c\/li\u003e \u003cli\u003eOnboard control circuit with volume control\u003c\/li\u003e \u003cli\u003eEfficient pulse-width modulation, low power consumption\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis mini amplifier based on the PAM8403 chip delivers audio signals from a smartphone, MP3 player or microcontroller board to two speakers. The gain is 24 dB, resulting in low power consumption and therefore long operating times when battery-powered. The pulse-width modulation inside the amplifier generates very little heat loss.\u003c\/p\u003e \u003cp\u003eThe amplifier operates between 2.5 and 5.5 volts, making it compatible with battery packs containing three or four AA cells as well as USB voltages. The analog input via the jack socket accepts low-level audio signals from sound sources and lets you adjust them using the integrated control. Both channels power speakers with up to 5 watts; to drive more powerful speakers, you will need a larger amplifier module.\u003c\/p\u003e \u003cp\u003eTypical applications include portable music playback, compact audio setups in projects, amplification of warning tones or voice playback in robots and autonomous vehicles, as well as hi-fi testing during prototyping. The amplifier can be connected directly to bench power supplies or powered by battery packs. Its circuit and layout are designed for breadboard prototyping.\u003c\/p\u003e \u003cp\u003eOperation requires a suitable power supply within the specified voltage range. The speaker connection points are non-polarized and allow any wiring configuration. Separate systems are required for stereo playback or higher power.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eThis module is intended exclusively for building prototypes and for testing and development purposes, and is not designed for use in household electrical circuits. When using an external power supply, work on the electrical installation must be carried out by a qualified electrician; if in doubt, consult a qualified electrician before use.\u003c\/p\u003e \u003ch4\u003eScope of delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x Mini audio amplifier PAM8403, 2-channel, 3W, 5V\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045650993501,"sku":"F23107758","price":1.84,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/audioverstaerker-mini-verstaerker-pam8403-2-kanal-3w-5v-funduino-2905369.png?v=1791491692"},{"product_id":"audio-verstarker-pm2038-5w-5w-2-kanal-5v-uber-usb","title":"PM2038 audio amplifier - stereo 2x 5 W, 5 V via USB","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eStereo audio amplifier with 2*5 W output power at a 5 V operating voltage\u003c\/li\u003e \u003cli\u003eInput for line-level signals (such as from microcontroller boards, smartphones, or audio modules)\u003c\/li\u003e \u003cli\u003eAmplification without an external power supply, powered directly by the 5 V logic level\u003c\/li\u003e \u003cli\u003eConfigured for speakers with an impedance of up to 4 ohms per channel\u003c\/li\u003e \u003cli\u003eHeadphone output can be used optionally\u003c\/li\u003e \u003cli\u003eCompact board with standard pinout for integration into development projects\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThe PM2038 is a compact stereo audio amplifier that boosts line-level signals to a higher output and can be connected directly to 5 V power sources. In addition to the power supply, the chip requires only a few external components for stabilization and coupling.\u003c\/p\u003e \u003cp\u003eBoth channels deliver 5 watts into a 4-ohm load; the output decreases accordingly with higher impedance. If you use 8-ohm speakers, expect around 2.5 to 3 watts per channel. The output signal is stable at high frequencies, and distortion remains low at normal levels.\u003c\/p\u003e \u003cp\u003eThe amplifier is suitable for projects that need audio feedback or music playback, robots with voice output, IoT systems with alarms, presentation hardware, or interactive installations. Since no additional power supply is required, the module fits into compact setups where space is limited. The input accepts typical digital audio chips, audio DACs, or sound cards operating at standard logic levels.\u003c\/p\u003e \u003cp\u003eSpeakers or headphones with a suitable impedance are required; the outputs are not designed for direct connection to headphones used with personal audio devices. The 5 V supply must have sufficient current capacity; under load, more than 2 amps per channel may flow briefly. A stable, low-noise power source is required to avoid hum interference.\u003c\/p\u003e \u003ch3\u003eSafety Notice\u003c\/h3\u003e \u003cp\u003eThe amplifier is not intended for connection to mains power and may only be used for prototyping, testing, and development. The 5 V power supply must be continuously monitored and protected against overload. If you are unsure about integrating it into larger systems or about the required protection circuits, consult a qualified electrician before putting it into operation.\u003c\/p\u003e \u003ch4\u003eScope of Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x Audio Amplifier PM2038 - 5W+5W, 2-channel, 5V via USB\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045651386717,"sku":"F23107826","price":4.31,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/audio-verstaerker-pm2038-5w5w-2-kanal-5v-ueber-usb-funduino-9706049.png?v=1791491742"},{"product_id":"gy-max4466-elektret-mikrofon-verstarker","title":"GY-MAX4466 Microphone Module - Electret with Amplifier, 2.7-5.5 V","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eElectret microphone module with integrated preamplifier for microcontrollers and single-board computers\u003c\/li\u003e \u003cli\u003eOutput signal normalized to 0 to 5 V\u003c\/li\u003e \u003cli\u003eTypical sound pressure level measurement range of 20 to 80 dB(A)\u003c\/li\u003e \u003cli\u003eAnalog output to an ADC input, or digital signal processing via a threshold comparator\u003c\/li\u003e \u003cli\u003eSupply voltage of 2.7 to 5.5 V, with very low power consumption\u003c\/li\u003e \u003cli\u003eMounted on a compact carrier board with a standardized header\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eAn electret microphone module with an integrated preamplifier measures sound levels for projects using microcontroller boards. The module connects the small electret condenser microphone directly to the audio signal input of a common analog-to-digital converter. The amplifier regulates the output voltage to the standard range of 0 to 5 V, so it can also drive 3.3 V logic with level adjustment.\u003c\/p\u003e \u003cp\u003eThe module measures sound pressure levels in a range of approximately 20 to 80 dB(A), which is sufficient for detecting conversations, traffic noise, and ambient sounds. Loud sound sources above this range, such as pneumatic hammers, can saturate the output. The analog voltage allows flexible threshold control via the analog-to-digital converter, while an onboard comparator can also operate independently for noise detection functions.\u003c\/p\u003e \u003cp\u003eTypical applications include room monitoring with alarms triggered by disruptive noise, automatic volume control for music players, and sound analysis projects with subsequent frequency filtering. Simple voice command systems that only need to make an on\/off decision also work reliably with a fixed noise threshold. Low power consumption of less than 1 mA allows battery operation.\u003c\/p\u003e \u003cp\u003eThe module requires a supply voltage between 2.7 and 5.5 V and connects to common microcontroller boards via the header. The analog output drives an ADC input with low impedance, while filter capacitors on the board reduce high-frequency noise. To calibrate against changing background conditions, the firmware must reset the reference point as conditions change.\u003c\/p\u003e \u003ch3\u003eSafety Notice\u003c\/h3\u003e \u003cp\u003eThe module is intended exclusively for building prototypes and for testing and development purposes; it is not suitable for installation in household electrical circuits. Work on or near the power supply requires the assistance of a qualified electrician. If in doubt, seek advice before commissioning.\u003c\/p\u003e \u003ch4\u003ePackage Contents\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x GY-MAX4466 electret microphone amplifier\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045652697437,"sku":"F23107619","price":2.71,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/gy-max4466-elektret-mikrofon-verstaerker-funduino-4093418.jpg?v=1791492054"},{"product_id":"mini-audioverstarker-pam8403-2x-3w-2-5v-5v","title":"PAM8403 audio amplifier - 2x 3 W stereo, 2.5-5 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eDigital audio amplifier with two channels, each with 3 W output power\u003c\/li\u003e \u003cli\u003e5 V operating voltage, powered directly by a standard USB power supply\u003c\/li\u003e \u003cli\u003eInput level up to 1 V, compatible with line-out and headphone outputs from mobile devices and boards\u003c\/li\u003e \u003cli\u003eI2C address 0*48, multiple modules can be operated on one data bus\u003c\/li\u003e \u003cli\u003eShutdown function to save power and protection circuits against overheating and short circuits\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThe audio amplifier converts digital audio signals into speaker output. With two independent 3 W channels, the module is suitable for stereo output in multimedia projects, robotics, and real-time applications. Its high level of integration makes it a first choice for space-constrained embedded systems.\u003c\/p\u003e \u003cp\u003eThe module operates on a 5 V supply and can be connected directly to USB power sources. Line-in signals from microcontroller boards or mobile devices are amplified; an input voltage of up to 1 V is sufficient to deliver full power. Shutdown and thermal protection enable efficient, reliable operation without external regulators.\u003c\/p\u003e \u003cp\u003eApplications include audio playback in robots, music projects, and interactive installations. A robot project with audio output, such as a voice output module that plays notification messages, can connect to the amplifier with just a few wires. I2C addressing allows multiple modules to operate on a single data bus, for example, controlled by a central microcontroller.\u003c\/p\u003e \u003cp\u003eConnect two passive speakers up to 8 Ω; the input impedance should be at least 10 kΩ to avoid signal loss. A simple power supply is sufficient; no additional switching power supply is required.\u003c\/p\u003e \u003ch3\u003eSafety information\u003c\/h3\u003e \u003cp\u003eThis module is intended exclusively for prototype construction and testing and development purposes, not for permanent installation in household appliances or mains-powered systems. When operating with speakers, observe the overtemperature cutoffs and ensure adequate heat dissipation. Work on the power supply, or any questions about commissioning, should be discussed with a qualified electrician.\u003c\/p\u003e \u003ch4\u003ePackage contents\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x Mini audio amplifier PAM8403 - 2x 3W, 2.5V - 5V\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045655515485,"sku":"F23107658","price":1.31,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/mini-audioverstaerker-pam8403-2x-3w-25v-5v-funduino-1354257.png?v=1791492278"},{"product_id":"audio-verstarker-tda7297-2-kanal-30w-2x15w-12v","title":"TDA7297 amplifier module - 2 channel, 2x 15 W, 6-18 V","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eStereo audio amplifier with two channels for 4- to 8-Ω speakers\u003c\/li\u003e \u003cli\u003eOutput power of 15 W per channel, designed for a 12 V operating voltage\u003c\/li\u003e \u003cli\u003eSupply voltage range: 6 to 18 V\u003c\/li\u003e \u003cli\u003eStereo input via 3.5 mm jack socket, with integrated volume control\u003c\/li\u003e \u003cli\u003eOn-chip short-circuit and overtemperature protection\u003c\/li\u003e \u003cli\u003eSoldered-on aluminum heatsink for heat dissipation\u003c\/li\u003e \u003cli\u003eScrew terminals for speakers and power supply\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThis stereo audio amplifier with an integrated TDA7297 chip is suitable for building active speakers, car audio systems, and adding amplification to the line outputs of consumer electronics. The module operates from a single supply voltage and does not require a split power supply.\u003c\/p\u003e \u003cp\u003eThe input signal reaches the board via the 3.5 mm jack socket, where a rotary potentiometer adjusts the volume of both channels together. The amplifier chip then sends the signal to the speakers through two separate screw terminals. A blue LED indicates the operating status.\u003c\/p\u003e \u003cp\u003eSince the chip is designed for operating voltages between 6 and 18 V, it can be used with 12 V power supplies, such as lead-acid batteries or stationary power supplies. The soldered-on aluminum heatsink dissipates the heat generated during operation, while the chip itself protects against damage through short-circuit monitoring and thermal shutdown.\u003c\/p\u003e \u003cp\u003ePractical applications range from building small portable active speakers to equipping vehicles with audio systems or adding external speakers to TVs and radios. The limited board space and simple wiring make this module a compact component for such projects. A 12 V power supply or a suitable power source in the 6 to 18 V range and speakers with an impedance between 4 and 8 Ω are required.\u003c\/p\u003e \u003cp\u003ePlease note that the amplifier runs on DC voltage and is not intended for direct connection to the household power supply. The module is intended solely for building prototypes and for testing and development purposes.\u003c\/p\u003e \u003ch3\u003eSafety Information\u003c\/h3\u003e \u003cp\u003eThe module is intended solely for building prototypes and for testing and development purposes and is not designed for operation on the household power supply. Work on power supplies above 24 V or near household electrical installations must be carried out by qualified electricians. If you are unsure about integrating the module into existing systems, consult a qualified electrician before commissioning it.\u003c\/p\u003e \u003ch4\u003ePackage Contents\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x Audio Amplifier TDA7297, 2-channel, 30W (2x15W), 12V\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045656039773,"sku":"F23107807","price":5.67,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/audio-verstaerker-tda7297-2-kanal-30w-2x15w-12v-funduino-9218079.png?v=1791492284"},{"product_id":"audioverstarker-3w-ca-6928-5v-mit-bluetooth","title":"CA-6928 Audio Amplifier - 3 W at 4 Ohms, 5 V, Bluetooth","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eAudio amplifier for Bluetooth speakers and portable audio devices\u003c\/li\u003e \u003cli\u003eOutput power: 3 watts into a 4-ohm load\u003c\/li\u003e \u003cli\u003e5 V DC power supply\u003c\/li\u003e \u003cli\u003eIntegrated Bluetooth module for wireless audio sources\u003c\/li\u003e \u003cli\u003eCA6928 chip with compact component layout\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThis 3-watt audio amplifier with Bluetooth module wirelessly connects smartphones, tablets, and other devices to speakers or headphones. The integrated chip design eliminates the need for additional components, keeping the circuit layout simple.\u003c\/p\u003e \u003cp\u003eIt is powered by 5 volts, as supplied by USB ports or standard power adapters. With a 4-ohm speaker, the amplifier delivers 3 watts of output power, which is sufficient for desk and tabletop devices in rooms of up to 20 square meters. Higher output levels require an additional amplifier.\u003c\/p\u003e \u003cp\u003eApplications include portable Bluetooth speakers, small home theater systems, ambient sound systems in workshops or storage areas, and audio amplification for projections. Its compact design allows installation in enclosures with limited space.\u003c\/p\u003e \u003cp\u003eIn addition to the audio amplifier, a 5-volt power supply is required for operation. A power adapter rated for at least 500 mA is recommended to prevent distortion caused by voltage drops. Speakers must be rated for 4 or 8 ohms.\u003c\/p\u003e \u003ch3\u003eSafety Notice\u003c\/h3\u003e \u003cp\u003eThis module is not intended for connection to household mains wiring. It is intended solely for building prototypes and for testing and development purposes. Work on or near electrical installations must be performed by a qualified electrician; check all connections before use.\u003c\/p\u003e \u003ch4\u003ePackage Contents\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x CA-6928 JL IC audio amplifier, 5V with Bluetooth\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045662855517,"sku":"F23107664","price":3.05,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/audioverstaerker-3w-ca-6928-5v-mit-bluetooth-funduino-8048457.png?v=1791492470"},{"product_id":"xh-m314-tpa3118-2x30w-bluetooth-verstarker-empfanger","title":"XH-M314 Amplifier Module - TPA3118, 2x 30 W, Bluetooth 5.0","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eTwo-channel amplifier module with 2*30 W output power\u003c\/li\u003e \u003cli\u003eBluetooth 5.0 for wireless audio sources\u003c\/li\u003e \u003cli\u003eDigital inputs for line-in and optical connection (SPDIF)\u003c\/li\u003e \u003cli\u003e12 to 24 V DC power supply\u003c\/li\u003e \u003cli\u003eAmplifier IC with integrated switching regulator\u003c\/li\u003e \u003cli\u003eDimensions: 110 * 75 * 35 mm with heatsink\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Description\u003c\/h3\u003e \u003cp\u003eThis two-channel amplifier module amplifies audio signals to 30 W per channel and drives active speakers or speakers with an external amplifier. Available audio sources include Bluetooth 5.0, an analog line-in with a 3.5 mm jack, and an optical digital connection (SPDIF). The source is selected on the module itself, while a switching regulator in the IC steps down the operating voltage from the 12 to 24 V DC range.\u003c\/p\u003e \u003cp\u003eFor home theater applications or flexible multi-room systems, the module can be connected to audio signals from single-board computers, streaming boxes, or sound cards. The wide voltage range also makes the amplifier suitable for automotive applications or systems with decentralized power supplies. Bluetooth eliminates the need for cables, while the wired inputs allow direct connections without pairing.\u003c\/p\u003e \u003cp\u003eThe module requires a stable 12 to 24 V DC power supply rated for at least 3 to 5 A, depending on the selected output load and amplification level. The speaker outputs provide uncompensated voltage signals and are high-impedance, so only speakers with integrated power amplifiers or external passive speakers with an impedance of at least 4 to 8 ohms are suitable. When using Bluetooth, the range for mobile devices is typically limited to 10 to 20 meters, depending on the environment.\u003c\/p\u003e \u003ch3\u003eSafety Notice\u003c\/h3\u003e \u003cp\u003eThis module is intended exclusively for building prototypes and for testing and development purposes, and is not suitable for permanent integration into household electrical circuits. Work on the power supply and with voltages above 50 V should be assigned to a qualified electrician. If you are unsure about sizing the power supply or matching the speaker impedance, consult a qualified electrician before use.\u003c\/p\u003e \u003ch4\u003eScope of Delivery\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x XH-M314 TPA3118 2x30W Bluetooth amplifier \u0026amp; receiver\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045668360541,"sku":"F23108239","price":9.74,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/xh-m314-tpa3118-2x30w-bluetooth-verstaerker-empfaenger-funduino-5450947.png?v=1791491125"},{"product_id":"am8406-digitaler-diy-audioverstarker-2x-5w","title":"AM8406 audio amplifier - 2x 5 W stereo, 4.5-13.5 V","description":"\u003ch3\u003eProduct overview\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eDigital audio amplifier for speakers with up to 5 watts of output power each\u003c\/li\u003e \u003cli\u003eTwo independent amplifier channels for stereo operation or two mono channels\u003c\/li\u003e \u003cli\u003eSimple volume control via potentiometers\u003c\/li\u003e \u003cli\u003eOperating voltage: 4.5 to 13.5 volts\u003c\/li\u003e \u003cli\u003eConnections via 3.5 mm jack plug (input) and screw terminals (output)\u003c\/li\u003e \u003cli\u003eCompact design without connecting cable or speakers\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct description\u003c\/h3\u003e \u003cp\u003eThis digital audio amplifier is designed for building small sound systems in projects. It accepts audio signals, amplifies them digitally to a maximum output power of 5 watts per channel, and drives small to medium-sized speakers. Its wide input voltage range of 4.5 to 13.5 volts makes it versatile. It can be powered easily by battery packs, power supplies, or USB power sources.\u003c\/p\u003e \u003cp\u003eThe module amplifies incoming signals and outputs them through two separate channels. This offers several circuit configuration options: use it as a stereo system for two speakers or as two independent mono channels for separate sound zones. The volume of each channel is controlled via separate potentiometers. If you do not connect external speakers, you will need to obtain a separate amplifier.\u003c\/p\u003e \u003cp\u003eThe amplifier is suitable for music playback in portable projects, as a sound module for robots or interactive installations, for DIY speaker kits, or for audio output from microcontroller boards. One example application would be a battery-powered alarm clock project with actual sound output, or a soundscape for a model-building diorama.\u003c\/p\u003e \u003cp\u003eFor operation, only a power source is needed in addition to the amplifier itself. Speakers, an audio source, and a power supply or battery must be provided separately. The maximum output power of 5 watts per channel is suitable for small rooms or near-field listening, but is not enough to fill larger areas with sound.\u003c\/p\u003e \u003ch3\u003eSafety notice\u003c\/h3\u003e \u003cp\u003eObserve the correct polarity when connecting the power supply; reversing it can damage the device. This amplifier is intended exclusively for building prototypes and for testing and development purposes, and is not suitable for integration into household mains wiring.\u003c\/p\u003e \u003ch4\u003ePackage contents\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e1x AM8406 digital audio amplifier, 2x 5W\u003c\/li\u003e \u003c\/ul\u003e","brand":"Funduino","offers":[{"title":"Default Title","offer_id":66045674127709,"sku":"F23107748","price":1.94,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1074\/5649\/5965\/files\/am8406-digitaler-diy-audioverstaerker-2x-5w-funduino-3616140.png?v=1791491218"}],"url":"https:\/\/funduino.com\/en\/collections\/acoustics-and-mp3.oembed","provider":"Funduino","version":"1.0","type":"link"}