Acoustics and MP3

Speaker 5 W - 8 Ohm, 30 x 70 mm

MAX98357 amplifier module - Class D, I2S, 3.2 W, 3.3-5 V

PAM8403 audio amplifier - class D, 2x 3 W, 5 V

NE5532 subwoofer preamplifier - low-pass filter, 12-24 V

MT8870 DTMF decoder - DIP-28 IC, 5 V, 16 keypad codes

AM8406 audio amplifier - 2x 5 W stereo, 4.5-13.5 V

CA-6928 Audio Amplifier - 3 W at 4 Ohms, 5 V, Bluetooth

TDA7297 amplifier module - 2 channel, 2x 15 W, 6-18 V

GY-MAX4466 Microphone Module - Electret with Amplifier, 2.7-5.5 V

XY-BT-Mini Bluetooth audio receiver - 4.1, 3,5 mm jack, 5 V

DY-AP3001 amplifier module - Bluetooth 5.0, 30 W, 8-24 V

XH-M120 Audio Amplifier - PAM8610, 2x 10 W, 5-26 V

TDA7492P amplifier module - 2x 25 W, Bluetooth 4.0, 12 V

TPA3116 amplifier module - Bluetooth 5.0, 2x 50 W, 24 V

ISD1820 Voice Recorder Module - 20 s recording, speaker, 5 V

NE5532 preamplifier board - 2 channels, 12-35 V

JLH 1969 Class A audio amplifier - 2N3055, gold-plated, soldered and unsoldered

TDA7492 audio amplifier - Class-D stereo, 2 x 25 W, 8-26 V

Microphone module - sound detection, 3-pin XH2.54

LM386 Audio Amplifier Soldering Practice Kit - 10 W, 9-12 V

XH-M314 Amplifier Module - TPA3118, 2x 30 W, Bluetooth 5.0

PAM8403 audio amplifier - 2x 3 W stereo, 2.5-5 V

PM2038 audio amplifier - stereo 2x 5 W, 5 V via USB

PAM8403 audio amplifier - 2-channel, 2.5-5.5 V, 3.5 mm jack

HXJ8002 amplifier module - mono audio amplifier, 2-5.5 V

CT14 Bluetooth audio amplifier - 2x 5 W, 5 V, 3.5 mm jack

XYW-WRBT audio receiver - Bluetooth 5.0, 3,5 mm jack, remote control

TPA3116D2 amplifier module - 2.1-channel, 2x 50 W + 100 W, 12-24 V

Funduino MP3 player kit - offline, SD card, supplementary materials

TDA7377 audio amplifier - 2 x 41 W at 4 Ohms, 8-18 V

Mini audio amplifier - Bluetooth, 2 x 3 W at 4 Ohms, 5 V

Bluetooth audio module - stereo 2x 3 W, 5 V

LED Audio Level Meter - 50-130 dB(A), 3.5 mm Jack, Blue

JDY-62 audio receiver - Bluetooth 4.0, stereo, 3.5 mm jack

Soldering practice amplifier - stereo, 2 x 3 W at 4 ohms, 5 V

HYX0021B mono amplifier - 15 W into 4 ohms, 5-12 V

HW-772 MP3 Amplifier Module - Bluetooth 4.1, 2x 10 W, 12 V

Voice Recording Module - 4 Min, Microphone and Speaker, 3x AAA

Bluetooth 4.2 Amplifier Module - 5 V, 2x 2 W Stereo or 4 W Mono