Dual Electronics XPA4640 2/1 High Performance Power MOSFET Class A/B Car Amplifier with 600-Watts Dynamic Peak Power FOUR CHANNEL AMPLIFIER  your Dual Electronics High Performance Power MOSFET car amplifier has specific linear circuitry that improves sound quality and power output while reducing distortion and refining efficiency for unrivaled sound superiority HIGH CURRENT & EFFICIENT MOSFET DESIGN  enables you to have 600 Watts of Peak Power, 150 Watts RMS via 2 Channel Bridged at 4 Ohms, 75 Watts RMS via 4 Channel at 2 Ohms and 50 Watts RMS via 4 Channel at 4 Ohms for unmatched sound quality FULL RANGE CROSSOVERS  when designing your power amplifier we added a low/high pass variable crossover for versatility, so you can use full range speakers or subwoofers SHORT CIRCUIT PROTECTION  given the vast amounts of power your car stereo amplifier has, we made sure that there was a thermal and DC offset safety protection included 1 YEAR WARRANTY  guaranteed high quality and reliability with hassle-free parts and labor warranty with excellent customer service DIMENSIONS  12.60 W x 9.06 D x 2.07 H