SOUND STORM FR4000.1 Amplifier - 4000 Watt, Class D, 1 Ohm Stable Monoblock with Remote Subwoofer Control 4000 W MAX Power, 1 Channel3000 W X 1 RMS @ 1 ohm3000 W X 1 RMS @ 2 ohm1500 W X 1 RMS @ 4 ohm6000 W X 1 RMS Strapped Bridged Power @ 2 ohm Monoblock, Class D, MOSFET Power Supply Low Level Inputs, RCA Pre-amp Outputs Variable Low Pass Crossover, Switchable Bass Boost and Variable Subsonic Filter and Switchable Phase Control Remote Subwoofer Control 6 Year Platinum Dealer Warranty