Specifications:Output Power(RMS): Subwoofer 50W; Satellites:Front/Rear 15Wx4; Cent 15WSpeaker Driver: Subwoofer 8"; Satellites:Front/Rear (3"x2+1.5")x4;Cent (3"x2+1.5")x4Dimension(mm): Subwoofer 165x360x410; Satellites:Front/Rear 120x57x1045; Cent 400x57x120Frequency Rang: Subwoofer 45-150Hz+/-5dB; Satellites 150-20KHz+/-5dBSensitivity: Subwoofer 100mB+/-20mV; Satellites 500mV+/-50mVS/N:80dBSeparate:40dBUnique Features:Front mounted USB connection for music playback from USB Flash/HDDPCM, PRO LOGIC IIAC-3 DTS Decoder Built-inLED display