BOSS Audio CER4800D Chaos Erupt  4800-watts Monoblock Class D 1 Channel 1 Ohm Stable Amplifier with Remote Subwoofer Level Control Class D Topology MOSFET Power Supply Low Level Inputs w/Pre-Amp Outputs Variable Crossover 3  Stable Class D Topology^MOSFET Power Supply^Low Level Inputs w/Pre-Amp Outputs^Variable Crossover^3 Stable