TSA6175 is a Bluetooth 5 multipoint audio receiver. You can make many TSA6175 paired and work together. You can also let it work as a normal Bluetooth audio receiver. This Bluetooth music receiver connects to the Line-In or Aux input on your home audio system. You can then stream audio from your Bluetooth enabled cell phone or mp3 player to your home audio system. Enjoy the convenience of having your music source in the palm of your hand and listening to it through your home stereo.