Features and specifications: 1) Full function remote control 2) Built-in 5.1 channel power amplifier (compatible with computer VCD, CD, DVD) 3) Output power: a) Subwoofer: 25W b) Satellite: 15W x 4 (RMS) 4) S/N ratio: >65dB 5) F-response: a) Subwoofer: 40-150Hz b) Satellite: 120Hz 6) Colors: silver, grey