Philips 5.1 Home theater HTS5520/94. Optical disc player type: DVD player, Disc types supported: CD, CD-R, CD-RW, DVD, DVD+R, DVD+RW, DVD-R, Playback disc formats: CD audio, CD video, SVCD, VCD. Video formats supported: ASF, AVI, DIVX, MPEG1, MPEG2, MPEG4, MPG, WMV, XVID, Analog signal format system: NTSC, PAL, Aspect ratio: 16:9. Audio output channels: 5.1 channels, RMS rated power: 800 W, Audio decoders: Dolby Digital 5.1, DTS, DTS 96/24. Supported radio bands: FM. Center speaker RMS power: 200 W, Center speaker frequency range: 150 - 20000 Hz, Center speaker impedance: 4 Ω