Bluetooth 4.2 amplifier module - 5 V, 2x 2 W stereo or 4 W mono

Product Overview

• Audio amplifier module for mono and stereo operation with Bluetooth interface
• Output power of up to 4 W in mono mode, 2 W per channel in stereo mode
• 5 V supply voltage, directly connectable to microcontroller boards
• Bluetooth receiver for wireless audio sources
• Stereo jack socket and mono speaker connections provided
• Integrated amplifier, no external power amplifier required

Product Description

This Bluetooth audio module amplifies audio signals from 5 V logic level to speaker power. It receives audio data wirelessly via Bluetooth and outputs it in amplified form, either through a stereo jack socket or directly to two individual speakers. Since the amplifier is integrated, no separate component is required, making the board significantly more compact.

The output power is up to 4 W in mono mode, which is sufficient for small amplifiers. In stereo mode, each channel provides 2 W. With a 5 V supply voltage, the module can be connected directly to common microcontroller boards without the need for additional voltage converters.

Typical applications include portable music playback via smartphone or tablet, alarm sirens with variable volume, notification sounds in automated projects, or audio feedback for robotics models. The Bluetooth connection is particularly useful for prototypes that need to communicate information about their surroundings acoustically.

Operation requires a Bluetooth-enabled device such as a smartphone or portable computer. Speakers or headphones must be purchased separately, depending on the desired output method. The final output power depends on the impedance of the connected speaker.

Safety Notice

The module is intended exclusively for building prototypes and for testing and development purposes. It must not be installed in or connected to the household power grid. If you are unsure about the power supply or correct connection, consult a qualified electrician before commissioning.

Scope of Delivery

• 1x 5V Mono/Stereo 4.2 Bluetooth Audio Amplifier Module