Dual Electronics DA6001 High Performance Series MOSFET Class D Mono Channel Car Amplifier with 4200 Watt Peak Power CLASS D MONO CHANNEL AMPLIFIER  your Dual Electronics DA6001 High Performance Series 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  this unique design enables you to have 4200 Watts of Peak Power, 1800 Watts RMS via 1 Channel at 1 Ohm Impedance, 1200 Watts RMS via 1 Channel at 2 Ohms Impedance for unmatched sound quality PASS THRU RCA CONNECTION  for expandability we added a pass through RCA output to easily connect an audio signal to an additional amplifier HIGH & LOW LEVEL OUTPUTS  we added this feature to your car amplifier for versatility in order for high-level inputs to accept speaker output signals and low-level inputs to accept preamp output signals 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  9.3 W x 14.5 D x 2 H