Logitech Z906. Audio output channels: 5.1 channels, RMS rated power: 500 W, Recommended usage: Universal. Satellite speakers RMS power: 67 W, Satellite speaker dimensions (WxDxH): 3.95 x 3.68 x 6.55" (100.3 x 93.5 x 166.3 mm), Satellite speaker weight: 31.4 oz (890 g). Center speaker RMS power: 67 W, Center speaker dimensions (WxDxH): 6.55 x 3.68 x 3.95" (166.3 x 93.5 x 100.3 mm), Center speaker weight: 31.4 oz (890 g). Subwoofer RMS power: 165 W, Subwoofer dimensions (WxDxH): 11.1 x 12.6 x 11.5" (281 x 319 x 293 mm), Subwoofer weight: 19.8 lbs (9 kg). Power source: AC, Power plug type: Type C