Sony All-in-one home theatre system. Optical disc player type: DVD player, Disc types supported: DVD-R/+R/+R DL/+RW/-RW/-RW(VR)/ DVD CD CD-R/RW. RMS rated power: 850 W, Audio output channels: 5.1, Audio decoders: Dolby Digital/dts/Dolby Prologic II. Center speaker RMS power: 142 W. Satellite speakers RMS power: 4 W. Subwoofer RMS power: 140 W