Lanzar OPTI3000D Lanzar Optidrive Mono Block Digital Competition Class Amplifier, Mono Amp 750 Watts RMS Power @ 4 Ohms - Mono Block Subwoofer Amplifier - MOSFET Power Supply 1350 Watts RMS Power @ 2 Ohms - Silver Plated RCA Inputs - Remote Bass Control 3000 Watts Max Power @ 1 Ohms - Double Sided Epoxy PCB Circuit Board - Soft Turn On/Off Custom Terminal Block for Speaker Connections - PWM (Pulse-Width-Modulated) System Thermal, Overload Short Protection - Dimensions: 10.08" (W) x 2.12" (H) x 20.87" (L)