Hi Steve:
Regarding the BTR800, there are two speakers that come with the kit (a stereo pair). One of the speakers is the Master Rock Speaker that features both an internal Bluetooth Receiver and Class D stereo 2 channel power amplifier. It is connected to the internal speaker in the Master Speaker and has a input connector for the external AC power supply (so yes it needs to be close to an outlet) The Master also has a single 2 conductor speaker wire output (Positive+/Minus-) in order to connect to the satellite speaker. The Satellite speaker does not have or need a power supply.
TL/4160