Four Channel Amplification 2 x 50 Watts Output,Front Channels 2 x 100 Watts Output,Rear Channels Variable Gain Control Accepts High or Low Impedance Inputs Gold Plated RCA Inputs High Level MOLEX Inputs Output Impedance:4-8 Ohms Remote Turn On/Off Thermal/Short Circuit/Overload Protection Heavy Duty Aluminum Alloy Heatsink Power On LED Indicator Protection LED Indicator Frequency Response:20-30k Hz S/N Ratio:>90dB Minimize