4 x 125 Watts RMS @ 4 Ohms 4 x 250 Watts Max @ 4 Ohms 2 x 500 Watts Max @ 4 Ohms idged 4 x 200 Watts @ 2 Ohms RMS MOSFET Automatically Switches to Maintain Rated Power Over a Wide Range of Battery Voltages Stiffly Regulated PWM-Type Power Supplies Variable Input Level Controls for Each Pair of Cannels Variable High Low Pass Crossover Controls High-Efficiency, Heavy Aluminum Heatsink Remote Subwoofer Bass Control Electronic Crossover Network Line Outs for 1/2 3/4 Channels Bass Boost Circuit idgeable at 4 Ohms 2 Ohm Stereo Stable Tri-Mode Capable Silver RCA Inputs Power Protection LED Indicators Advanced Protection Circuitry Soft Turn On/Off Frequency Response: 10 Hz-40 kHz S/N Ratio:95 dB Fuse: 15A x 3 Dimensions: 10.25"W x 2.36"H x 11.61"L