Samsung HT-Q20 Home Theater System, DVD player, 1 discs, 5.1 channels, 500 W, Dolby Digital, Dolby Pro Logic II, DTS, MP3, WMA Samsung HT-Q20 Home Theater System. Optical disc player type: DVD player, Number of optical discs: 1 discs. Audio output channels: 5.1 channels, RMS rated power: 500 W, Audio decoders: Dolby Digital, Dolby Pro Logic II, DTS. Supported radio bands: FM. Center speaker RMS power: 80 W, Center speaker impedance: 3 Ω. Satellite speaker impedance: 3 Ω