MP3 Decoder Module with Bluetooth Connectivity and Display

The Bluetooth MP3 Amplifier Module with Display is a versatile, all-in-one audio solution designed for DIY speakers, custom sound systems, and commercial audio projects. Built on Bluetooth 2.1 + EDR (CLASS2) technology, this stereo amplifier module supports A2DP wireless music streaming from smartphones, tablets, and other Bluetooth-enabled devices, with a transmission speed of up to 3Mbit/s and full backward compatibility with Bluetooth 3.0 and below. You can even control track switching and volume adjustment directly from your phone or connected device.

This Bluetooth audio module goes far beyond wireless playback. It supports SD/MMC cards and USB flash drives with MP3, WMA, and WAV playback, FM radio (87MHz–108MHz), AUX input for external audio sources, and even UX/FM/MIC recording. A 128M4 dot matrix display shows working status, playing time, song titles, artist names, and synchronized lyrics, making it easy to monitor playback at a glance. With a 32-level volume control, one-button MODE switching between Card, USB, AUX-IN, FM, and Bluetooth modes, and support for FAT16, FAT32, and ExFAT/Fat64 file systems, this module offers exceptional flexibility.

Designed for reliability, the module features firmware encryption, USB firmware upgrade support, and an anti-power-reverse design that prevents damage even if the power supply is connected incorrectly. It supports up to 8 directory levels and up to 9999 music files in total, with no file limit per directory. Operating on 9V to 12V DC, the Bluetooth MP3 Amplifier Module with Display is ideal for home audio systems, portable speakers, car audio upgrades, retail displays, and custom electronics projects.

MP3 Amplifier with Display Application:

1. Car system
2. Audio devices

12v Bluetooth MP3 amplifier Specification:

1. Power: DC9-12V
2. Output: 500MV
3. Rated input: 12V/0.2A
4. Operating temperature: -20 ° C ~ 60 ° C
5. Size: 120*63mm

Host button:

1. MODE: Press this button to cycle through the input USB-SD-UNE-FM-BLUE.
2. Press the PREV button in the USB/SD/BT playback state to select the song, long press to rewind (BT invalid), short press to select the last station in the FM state. Long press to search backward, search When the current station is played to the radio, the AUX status is invalid.
3. NEXT button in the USB / SD / BT playback state short press to select the next song, long press for fast forward (BT invalid) in the radio FM state short press to select the next station, long press for forward search, search The radio plays the current station. The AUX status is invalid.
4. PLAY/PAUSE button, PLAY/PAUSE: Pause on USB/SD/BT. Press and hold this button in the radio state to enter the auto search station, and the FM/AUX status is short pressed.
5. The FD+ button selects the forward selection folder in the USB/SD state.
6. The FD-key selects the folder to be selected in the USB/SD state.
7. REP: USB/SD playback mode, is RANDOM / ONE / ALL / FOLDER, boot USB / SD playback state is default to ALL state, then short press to enter ONE, press again for RANDOM, BT /FM/AUX is invalid.
8. EQ: USB/SD status is sound field mode NORMAL_POP — ROCK — JAZZ — CLASSIC — COUNTRY — BASS; press this button in AUX/FM/recorder state to enter AUX/FM/MIC recording.
9. the boot master volume defaults to the maximum (30), the default Bluetooth state, USB / SD support post-plug priority, power-off memory track / radio and status.

Remote control function:

1. POWER: (STANDBY) ON/OFF.
2. MODE: Press this button to cycle through the input USB-SD-BLUE-FM-UNE.
3. PREV: Short press in the USB/SD/BT playback state to select the song, long press to rewind (BT invalid), short press to select the last station in the radio FM state, long press to search backward, search Play the current station to the radio. The AUX status is invalid.
4. NEXT: short press in the USB/SD/BT playback state to select the next song, long press for fast forward (BT invalid) short press to select the next station in the radio FM state, long press to search forward, search The radio plays the current station. The AUX status is invalid.
5. -VOL+: increase the volume
6. VOL-: volume reduction
7. REP: The mode of entering the playback mode when USB/SD is playing is ONE/ALL/RAN (the state of USB/SD playback is default to ALL state, then press ENTER and then press ENTER again to enter RAN).
8. STOP: The playback stops in the USB/SD card state, and other states are invalid.
9. MUTE: Press mute in all states, press again to unmute.
10. EQ: USB / SD state is the sound field mode, NORMAL - POP - ROCK - JAZZ - CLASSIC - COUNTRY - BASS.
11. PLAY/PAUSE: Press briefly in the USB/SD/BT playback state to pause, and press again to play. Press this button in the radio state to enter the auto search station.
12. 0~9: In the USB/SD to do the direct selection button, more than 10 consecutively input the number to be selected, select the stored station in the FM state, or press the number button to directly input the station frequency to play the station.