Massive power massive subwoofers! The Lightning Audio 3000MD is a 3,000 Watt Mono Digital amplifier designed for 2-ohm woofer loads like a pair of 4-Ohm woofers wired in parallel or four 4-Ohm DVC woofers wired in series/parallel. This amplifier features balanced/RCA inputs, phase, low pass crossover, bass boost with one band parametric EQ, subsonic filter, master/slave capability with RCA outputs for daisy-chaning another amplifier.Number of Channels 1Rated Power 600 Watts x 1 @ 4-Ohms 1,000 Watts x 1 @ 2-Ohms 1,400 Watts x 1 @ 1-OhmMax Power 1,500 Watts x 1 @ 4-Ohms 2,250 Watts x 1 @ 2-Ohms 3,000 Watts x 1 @ 1-OhmBridgeable NoCrossover Controls 12dB/octave LP 35Hz to 250Hz Subsonic: 15Hz to 55HzTone Controls Frequency Range: 20Hz to 80Hz Q-Control: Wide to Narrow Bass Boost: 0dB to +18dB @ 45Hz Phase: 0° to 180°Signal Input Low-Level: 2 RCA (200mV to 6V)Signal Output (2) RCA (slave in/out)Power Input Connector Block connector w/ set screwPower Wire Gauge 4 AWGSpeaker Output Connector Block connector w/ set screwSpeaker Wire Gauge 8 AWGHeat Sink Type Extruded aluminumCooling ConvectionRemote Control Bass Boost (included) w/ integral Power LED & Protect LEDVisual Indicators Power ProtectCircuit Topology Class Class DTHD at Rated Power 95 dBShipping Weight 15 Lbs. (6.8 Kg.)Dimensions L15" x W9.4" x H2.3" 38.1cm x 23.876cm x 5.8cm