Features 1、Audio input mode: For Bluetooth Receiver, USB Decode playback ,TM card Decode playback 2、Support Play format: MP3, WMA, WAV, FLAC, APE(only support APE FAST encoding format) 3、In the back of the board, there is 5V and GND power supply interface, it is easier to modify. Support FAT32 System 4、Pre‑stage output can be directly pushed headphones, but also can be used after the power amplifier 5、This wireless for bluetooth 4.1 audio receiver module is used for car speaker amplifier modifying, is a good DIY car speaker circuit board Specification Features: Audio input mode: For Bluetooth Receiver, USB Decode playback ,TM card Decode playback. Support Play format: MP3, WMA, WAV, FLAC, APE(only support APE FAST encoding format). In the back of the board, there is 5V and GND power supply interface, it is easier to modify. Pre-stage output can be directly pushed headphones, but also can be used after the power amplifier. This wireless for Bluetooth 4.1 audio receiver module is used for car speaker amplifier modifying, is a good DIY car speaker circuit board. Specifications: Power supply: 5V DC Size: 50 x 40mm/1.97 x 1.57inch Weight: 11g Package Included: 1 x Wireless for Bluetooth 4.1 Audio Receiver Module Package List