This is a bluetooth audio receiver module with usb and TF card decoding. Usually it’s can be used as a mp3 player, just a TF card and DC 5V power supply. It has five buttons for you to change mode or achieve other audio control like volume adjustment. It has two modes : music mode and bluetooth device mode. Just press the mode button for switching. When it switch into Bluetooth device mode, it can launch a bluetooth signal, when you connect other device with it, the blue led will stop flashing for a while. Simple to use with clear sound. You’d better not miss it.
Audio input mode: 1 Bluetooth receiver 2.USB decode and play 3.TF card decoding playback
Support playback format: MP3, WMA, WAV, FLAC, APE (APE only support for FAST encoded format)
Power Supply: DC5V
Preamp output can be directly promote the headset and also use with a power amplifier