Output Power: Subwoofer: 15W Satellite: 3Wx5 Speaker Unit: Subwoofer: 5" Satellite: 2"x5 Impedance: Subwoofer: 6Ω Center: 2Ω Front: 4Ω Rear: 4Ω Frequency Response: Subwoofer:80Hz-250Hz Satellite:180Hz-18KHz Power Source: AC240V,50Hz Signal-to-Noise Ratio: ≥75dB Dissociation: ≥40dB Control: Volume, Bass, Front, Rear, Center, Power on/off, Mute on/off, Headphone output.