4 x 150 Watts RMS @ 4 Ohms 4 x 300 Watts Max @ 4 Ohms 2 x 600 Watts Max @ 4 Ohms idged 4 x 250 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 Bass Boost Circuit idgeable at 4 Ohms 2 Ohm Stereo Stable Tri-Mode Capable Gold RCA Inputs Power Protection LED Indicators Advanced Protection Circuitry Soft Turn On/Off Frequency Response: 15 Hz-35 kHz S/N Ratio: 90 dB Fuse: 25A x 2 Dimensions: 10.25-InchW x 2-InchH x 17-InchL