Features The board uses the classic circuit of the TPA3110 while using a single power supply with anti reverse function Power can be used with adapters and switching power supplies Most of the resistive container parts are standardized and patched which is simple and stable Designed a special interface for the bluetooth audio receiver module built in 5V voltage regulator circuit It is very easy for DIY bluetooth speaker Specifications Working voltage DC 8V 26VOutput power 15W X 2 16V Working current greater than or equal to 2ASpeaker impedance 4 8OhmWork efficiency greater than or equal to 90 bluetooth version V4 2 Package Included 5 x TPA3110 bluetooth 4 2 Digital Amplifier Board 15Wx2