Panasonic SA-HE75 5.1 Channel Surround Sound Home Theater Receiver (Black) (Discontinued by Manufacturer) Dolby Digital and DTS decoders, and Dolby Pro Logic II surround sound 100 watts per channel, with less than 0.9% total harmonic distortion Three surround-sound modes: movie, music, and panorama Six sound field control presets: hall, club, live, theater, simulated surround, and party Speaker size and placement controls customize sound to your room