Bluetooth MP3 Module with FM Radio – Transform your classic amplifier into a modern digital audio system
Have a great amplifier that lacks modern connectivity? You don’t need to replace it. This MP3 module with Bluetooth, USB, MicroSD slot, and FM radio mounts directly into your front panel, giving you all the digital sources you need in under 30 minutes.
Note: This module requires a stabilized power supply between 7V and 12V DC. Exceeding this voltage may cause permanent damage. We recommend using a voltage regulator or a Zener diode for extra protection, especially in automotive installations.
Why choose this model? (Key Benefits):
- 4-in-1 Audio Sources — Bluetooth wireless streaming, USB 2.0, MicroSD/TF card, and 3.5mm AUX jack, easily switchable via remote control
- Integrated FM Radio — Features a configurable antenna that works in both metal and plastic housings without extra accessories
- IR Remote Control included — Manage volume, source selection, and track navigation from a distance without touching the panel
- Universal Standard Fit — 107 x 26 mm dimensions with 96 mm screw spacing, compatible with most car and home audio amplifiers
- Low Power Consumption — Only 35mA in standby mode, ensuring it won’t drain your car battery when the system is off
- Versatile Standalone Use — Can be used independently of an amplifier when powered by an external 7–12V DC source
Performance and Technical Details
At the heart of the module is a dedicated MP3 decoder that automatically starts playback upon power-up—no extra settings required. The 0.3 Vpp audio output on the OL and OR channels is perfectly matched for standard amplifier pre-amp stages, ensuring distortion-free line-level audio. Bluetooth pairing is quick and seamless with any smartphone or tablet, and the ANT wire (red) can be easily configured based on your housing type for optimal FM reception.
| Parameter | Value / Detail |
|---|---|
| Power Supply | 7V – 12V DC (stabilized) |
| Current Consumption | 35mA (stand-by) / up to 100mA (SD/USB active) |
| Audio Output Voltage | 0.3 Vpp |
| Connectivity | Bluetooth, USB 2.0, MicroSD/TF, 3.5mm AUX jack |
| FM Radio | Integrated, configurable antenna |
| Remote Control | IR (Infrared), CR2032 battery included |
| Front Panel Dimensions | 107 x 26 mm |
| Mounting Depth | 26 mm |
| Screw Hole Spacing | 96 mm |
| Supported Audio Formats | MP3 (via USB, MicroSD) |
| Recommended Applications | Car audio, home amplifiers, vintage audio systems |
Installation and Usage Instructions
- Connect the positive (red) wire of the power connector to a stabilized 7V–12V DC source.
- Connect the GND wire to the small-signal ground of your amplifier—avoid connecting directly to the metal chassis to prevent ground loop hum.
- Connect the OL and OR wires to the Left and Right audio inputs of your amplifier.
- For FM Radio, position the ANT wire (red): extend it if the housing is plastic, or attach it to the inside of the casing if it is metal.
- Insert a USB stick or MicroSD card with MP3 files—playback starts automatically.
- Enable Bluetooth on your phone or tablet and pair with the module for wireless streaming.
- Use the included IR remote to switch between sources (BT / USB / SD / FM / AUX), adjust volume, and skip tracks.
Package Contents
- 1x Bluetooth MP3 Module with USB, MicroSD, FM, and AUX
- 1x IR Remote Control with CR2032 battery
- 2x Wiring harnesses (power + audio signal)
Frequently Asked Questions
Can I power the module directly from a 12V car battery?
Yes, but the voltage must be stabilized. Car battery voltage can spike above 12V when the engine starts. Use a voltage regulator or a Zener diode for protection, especially if installing in a vehicle with an active alternator.
Does it work with home amplifiers, or just car audio?
Yes, the module is universal. Any amplifier with an analog L/R audio input will accept it—whether it’s for car, home, or standalone use with an external 7–12V DC power supply.
What audio formats are supported on USB and SD cards?
The module plays MP3 files from USB sticks or MicroSD/TF cards. Files should be placed in the root directory of the storage device for automatic recognition at startup.
Why shouldn’t I connect the GND directly to the car chassis?
The module handles low-level audio signals (0.3 Vpp). Connecting the ground to the metal chassis can create ground loops, resulting in audible background hum. Always connect the GND to the reference point of your amplifier or power supply.
Does the remote use Bluetooth or Infrared?
It uses Infrared (IR), similar to a TV remote. It requires a direct line of sight to the module to function correctly, with an effective range of up to 5–6 metres.
Photo Gallery
***a* ****as –
Honestly, I didn’t expect much, but the sound quality is surprisingly clear. It turned my old car’s dash into a modern media player in minutes.