The Pioneer AS-BT200 Bluetooth Stereo Adapter connects to a proprietary port on the back of compatible Pioneer receivers. Simply pair your A2DP profile Bluetooth-enabled device with them and get ready to enjoy your music in a way you never could before. Pioneer's exclusive Air Jam app, available for free download on the App store, lets you and your friends connect up to four Apple devices to make a group playlist on your home theater through your Pioneer receiver. Enjoy all of your music wirelessly from your iPhone, BlackBerry, Android or other smartphone, as well as your PC, laptop or any other A2DP profile Bluetooth-enabled source directly on your Pioneer receiver. So now that your digital music is playing wirelessly from your favorite portable devices to your home theater, what's it going to sound like? Surprisingly good because of Pioneer's Sound Retriever AIR technology which restores audio quality often lost during Bluetooth transmission.