MP3 Decoder Module with 2W Mono Amplifier USB MicroSD TF Audio Player

The MP3 Decoder and Player Module with Built-in Mono Amplifier is a compact solution for easily adding audio playback to electronics projects, DIY devices, and custom systems.

It can be powered with a voltage between 3.7V and 5V DC and directly integrates a 2W mono audio amplifier , capable of reaching a power of up to 3W with a 5V supply . It can therefore directly drive small speakers without necessarily requiring an external amplifier.

By supplying power to the module, track playback can be started automatically, a feature that is especially useful for devices that need to play messages or audio content when turned on.

MP3 playback from USB and microSD

The module supports audio files in MP3 format and can play them from:

• USB drives: Tested up to 32GB

• TF/microSD cards: Tested up to 16GB

Media selection is automatic : the module detects the inserted memory device, be it a microSD/TF card or a USB stick.

Integrated mono amplifier

The built-in amplifier allows direct connection of a small speaker.

• Rated power: 2W

• Maximum power: up to 3W with 5V power supply

• Audio output: mono

This feature allows for the creation of extremely compact audio systems by reducing the number of external modules required.

Integrated controls

The buttons on the card allow you to directly control playback:

• Play/Pause

• Previous track

• Next track

• Select playback mode

Mode of operation

Single repetition

The device plays the tracks on the media. Once the list is complete, playback restarts from the beginning. The Play/Pause button allows you to pause and resume playback at any time.

Loop Playback

The selected track plays continuously. You can choose a different track using the Prev/Next buttons, while the Play/Pause control retains the normal pause and resume function.

Applications

Thanks to its small size and built-in amplifier, the module is particularly suitable for:

• DIY audio projects

• Built-in voice players

• Alarm systems with audio messages

• Voice alerts

• Devices with personalized messages

• Toys and sound devices

• Projects with microcontrollers

• Electronic prototyping

• Compact MP3 players

• Automations with audio playback

Technical features

• Supply voltage: 3.7-5V DC

• Supported audio format: MP3

• USB Support: Up to 32GB tested

• TF/microSD Support: Up to 16GB tested

• Media selection: automatic

• Integrated amplifier: mono 2W

• Maximum power: up to 3W with 5V power supply

• Controls: Play/Pause, Previous Track, Next Track

• Play mode: Track playback / Loop the selected track

• Dimensions: 45.72 × 35.14 × 12 mm

• Weight: 11 g

• SKU: MP3DECMOD

The dimensions of only 45.72 × 35.14 × 12 mm and a weight of 11 grams allow the module to be easily integrated even into equipment and containers with limited space.