Samsung HW-R550, 2.1 channels, 320 W, DTS, Dolby Digital, Active subwoofer, Black, AAC, MP3, OGG, WAV Samsung HW-R550. Audio output channels: 2.1 channels, RMS rated power: 320 W, Audio decoders: DTS, Dolby Digital. Subwoofer type: Active subwoofer. Product color: Black, Audio formats supported: AAC, MP3, OGG, WAV. Connectivity technology: Wired & Wireless. Soundbar power consumption: 25 W, Subwoofer power consumption: 28 W, Power consumption (standby): 0.5 W