Bluetooth MP3 decoding module audio receiver board Lossless car speaker amplifier modified Bluetooth 4.1 circuit board

Description:

 

Support bluetooth 4.1 mode, support automatically back to even, support to decode WAV / APE / FLAC / MP3 files losslessly, support to output stereo, with 3W power amplifier on board, support USB audio function, support the TF card downloading, support U disk TF card playing, supprot IR remote function.

 

Parameters characteristics:

 

Power supply: DC 3.7-5V

SNR: 90dB

THD+N: -70dB

Crosstalk: -86dB

DNR: 91dB

Support profile: A2DP / AVCTP / AVDTP / AVRCP / HFP

LOS > 15m

 

Operating specification:

 

Mode control:

bluetooth mode is default, powered on when there is no U disk or TF card installed on board; And music mode is defult, powered on when U disk or TF card  is installed on board. Switching mode using adkey or IR remote.

 

Music mode:

Playing the audio files stored in the U disk and TF card,when plug into U disk and TF card.

 

bluetooth mode:

When switching mode and playing “The bluetooth device is ready to pair”,it goes into bluetooth mode and is ready to pair. The device named “XY_BT” Cell phone searched is the decoding board device.Connecting the “XY_BT” device with cell phone, the decoding board plays “The bluetooth device is connected successfuly”, the decoding board has connected with the cell phone successfully, and you can playing music through the bluetooth device. Showing in the below picture .