3Pcs bluetooth Audio Receiver Digital Amplifier Board With USB Port TF Card Slot

Specification Audio input mode 1 bluetooth receiver2 USB decoding play3 TF card decoding playSupporting play format MP3 WMA WAV FLA C Power supply 5V DC mobile phone charger can power small USB plug Preamp output can directly promote the headset also can be connected to the use of rear stage power amplifierbluetooth version 2 1Package Included 3 x Amplifier Board