TF/U Disk MP3 Format Decoder Board Amplifier Module
The TF/U Disk MP3 Format Decoder Board Amplifier Module is a compact audio playback board designed for DIY electronics and embedded audio projects. It plays MP3 files stored on a microSD (TF) card or a USB flash drive. The board includes an onboard 2W mono power amplifier capable of ~3W output at 5V for driving a 4Ω speaker, plus a 3.5 mm stereo headphone jack for external audio output.
It is powered via a Micro-USB connector 5V or an optional 3.7 V lithium battery (solder-pad terminals), and features four push-button controls for navigation and mode selection. A red LED indicator flashes during MP3 playback. The module is often used in applications like message playback systems, audio announcements, alarms, or any project requiring standalone MP3 audio playback
Features:
- Superior sound quality Onboard 2W mono amplifier(5V power of up to 3W) is directly connected to the speaker (recommendation 4 Ω 3W speakers),3.5mm gold plated headphone jack can connect with headphones or external audio.
- With a Micro USB port. Through the mobile phone data line can use mobile power supply or the USB cable to charge the MP3 battery, also can use 3.7V lithium battery, or USB 5V power supply.
- Support TF Card (mobile phone memory card) and U disk play mode.
- No soldering with speaker terminals for easy wiring.
- The module is designed to facilitate modification.
- Support MP3 format, playing power on automatically.
- When mp3 is played the red LED flashes.
- Support U disk (test 32G), TF Card (test 16G) play mode; power on default TF card mode, if the TF card does not exist automatically jump to the U disk mode, and both devices have installed, then you can manually set the play mode. For details please see the key operating instructions.
- Buttons can be adjusted up and down to control songs, volume up and down, pause or play, mode switching. For details please see the key operating instructions.
- Press menu button enter the single/all song play mode. The default mode is the all song mode when power up. Pressing the Repeat button can replace the circulating mode.
Specifications:
- Operating Voltage: 3.7 – 5.5 V DC (Micro-USB 5 V or 3.7 V battery)
- Output Power: 2 W mono (recommended for 4 Ω/3 W speaker) – up to ~3 W max at 5 V
- Audio Format: MP3 only (no WAV/WMA decoding)
- Supported Memory: MicroSD/TF card slot (≤16 GB tested); USB-A host port (≤32 GB)
- Audio Outputs: 3.5 mm stereo headphone jack (L, R, GND) and 2-pin speaker terminal (mono out)
- Amplifier Type: 8002A class-AB power amplifier (2 W)
- Dimensions: ~45 × 36 × 9 mm (board)
- Controls: 4 pushbuttons ( Next, Mode/Play, Repeat) for user interface
- Indicator: Red LED (plays on MP3 activity)
Key Operating Instructions:
- “Prev / V–” button: “Press” for switching previous song, “long press” for volume down.
- “Next/v++” button: “Press” for switching next song, “long press” for volume up.
- “P / P / Mode” button: “Press” for the “Play/Pause” Switch, “long press” for U disk, TF card mode.
- “Repeat” button: “Press” for “single/all song” mode(no long press).
- TF Card Slot: MicroSD (TF) card slot for MP3 file storage.
- USB-A Port: Standard USB Type-A female socket for U-disk/flash drive input.
- Headphone Jack: 3.5 mm stereo jack for external headphones or amplifier (L, R, GND).
Applications:
- Portable MP3 Players Ideal for creating handheld audio devices with TF card or U disk playback.
- Mini Speakers Suitable for compact, no-screen speaker systems with direct speaker connectivity.
- Audio Playback Devices Can be integrated into toys, kiosks, or other devices requiring audio output.
- Educational Projects Useful for teaching electronics and audio system design in classrooms or workshops.
- DIY Electronics Perfect for hobbyist projects requiring simple, reliable MP3 playback.
Package Includes:
- 1 x TF/U Disk MP3 Format Decoder Board Amplifier Module.
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