Arctic Cooling S161. Audio output channels: 2.1, RMS rated power: 14.5 W, Recommended usage: PC. Satellite speaker type: 1-way, Satellite speakers RMS power: 3.5 W, Satellite speaker impedance: 4 Ом. Subwoofer type: Active, Subwoofer RMS power: 11 W, Subwoofer impedance: 8 Ом. Satellite speaker dimensions (WxDxH): 88 x 157 x 88 mm, Subwoofer dimensions (WxDxH): 190 x 157 x 162 mm, Set weight: 2.1 kg