Sony 5.1ch DVD home cinema system. Optical disc player type: DVD player. RMS rated power: 850 W, Audio output channels: 5.1, Audio decoders: Dolby Digital, Dolby Prologic II, DTS. FM band range: 87.5 - 108 MHz, AM band range: 531 - 1602 kHz. Center speaker RMS power: 142 W. Satellite speakers RMS power: 4 W