4/3/2 channel amplifier, vario bass EQ circuit with up to 18 db of boost, 24db per octave subsonic filter, 4 x 100 watts RMS at 4 Ohms, 4 x 150 watts RMS at 2 Ohms, 2 x 300 RMS watts at 4 Ohms (bridged), 1800 watts max power, 0.2V to 6.0V input sensitivity range, and 19.2 x 2.25 x 10.4 inch dimension, conformal coated PCB, space-saving mass aluminum heatsink, micro class A/B topology, high-speed MOSFET devices and adjustable hi-pass and lo-pass crossovers. Includes 4-way protection circuitry and built-in cooling technology