Wet Sounds Sinister Series SD2 Amplifier - Class D 1250 Watt Full Range Amp MAXED Class D High Efficiency Power Supply *** 2 x 400 Watts RMS @ 4 Ohms *** 2 x 620 Watts RMS @ 2 Ohms *** 1 x 1250 Watts RMS Bridged Mono SD2, SD4 & SD6 Sinister Amps Share the Same Heatsink Size Removable Amp Cover to Access Hidden Wiring and Amp Controls with Quick Release Power and Speaker Wire Terminal Plugs Marine Compliant 4 Layer Conformal Coated PCB Circuit Board with Fully Balanced Inputs Internet Warning!!!