Total power output: RMS 8W x 2 + 14W x 1 THD + N (testing level): 10% Signal to noise ratio: 85dBA Distortion: 0.5% Input sensitivity: Satellites: 500mV ± 50mV Subwoofer: 100mV ± 50mV Input impedance: 10KΩ Audio Input Type: 3.5mm Stereo, USB input port Adjustment: Volume adjustment, bass adjustement, track skip/rewind, play/pause button Subwoofer / bass unit: 5 inch (131mm), Magnetically shielded, 4Ω Tweeter unit: 2? inch (70mm), Magnetically shielded, 4Ω Dimensions: Satellite: 86mm x 162mm x 121mm Subwoofer: 161mm x 200mm x 280mm (WxHxD) Weight: 4.70Kg (net) / 5.30Kg (gross)