DESC: Best Experience Possible With the VSX-9100TX, multi-channel movies, music, and games will never be the same again. Its Automatic MCACC (Multi-Channel Acoustic Calibration System) with 5 band EQ offers studio-quality set-up and calibration of your system, and it works in any room. For the best movie experience possible, THX Select brings powerful, accurate movie theater sound to typical TV rooms.