The system can be set in either a 3.1 or 5.1 configuration. An all-in-one solution, the system has built in decoders, a tuner, a remote control and a separate display for the individual settings. The remote features a Media Center button as well as the Xbox Guide button and the X,Y,A, and B buttons. Also on board is a nifty feature Pioneer calls Multi-Channel Acoustic Calibration System, or MCACC (shouldn't that be MCACS?). This feature utilizes an embedded microphone that adjusts each individual speaker to fit the acoustics of the room, ensuring that the sound from each speaker reaches your ear at the same time and the same volume. Um...wow.