4 x 75 Watts Total OutputVariable Gain Control Accepts High or Low Impedance Inputs Gold Plated RCA InputsHigh/Low Level Inputs Output Impedance: 4-8 Ohms Easy Access Speaker Connection Remote Turn On/Off Adjustable Gain Control Thermal Protection Overload Protection Load Dump Over Voltage Heavy Duty Aluminum Alloy Heatsink Power On LED Indicator Frequency Response: 20-30kHz THD:90dB Dimensions: 7 7/8-Inch W x 2-Inch H x 7 15/16-Inch L