5.2 CH Power Amplifier 8 DSP Sound Effect (4 ohm) Full Function Remote Control.Driver unit:1x1"+2x4"+1x6"(4 ohm) Impedance:85¿3dB.Central speaker: 30Wx1 Driver unit:1x1"+2x4"(4 ohm) Impedance:85¿3dB Surround speaker:30Wx2.Driver unit:1x1"+1x4" ( 4 ohm) Impedance: 85¿3dB.Driver unit:1x8" ( 4 ohm) 300mm* 300mm* 300mm Impedance: 85¿3dB.Power Output:Front RMS 80WX2.Surround and Center 20WX3(4 ohm) .Subwoofer: RMS 80Wx2(4 ohm) .Main speaker: 80Wx2