The KS 600.2 V3 is a truly SQ packed powerhouse that offers users a powerful moderately sized amplifier that can deliver up to 1200 watts of power for subwoofer applications and/or those full range marine tower applications and up to 600 watts of power per channel for your dynamic powerhouse components systems. Class G and Class G/H amplifiers offer the best of all possible characteristics. Power output, distortion, efficiency, heat, noise, size are all class leading specs with this design. But why does this class of amplifier perform so well? It's built for music, not test tones or noise. When an amplifier is playing music, even at full volume, due to its dynamic nature, it is only working above 1/2 power about 10% of the time. You only need full power during the very loud passages like the impact of a drum or the pluck of a bass string. The rest of the time your 700-watt amp is making less than 350 watts. That's where the KS amp's Class G/H design comes into play. Then, in a fraction of a second, your amp becomes an 800-watt monster that is ready for any musical challenge. Features: 4-Channel Full Range Amplifier Advanced Microprocessor Control System Non-Digital Class G/H Switching Design Code Based Flashing Diagnostics Designed By Robert Zeff Protection Against: Reverse Voltage, Over Voltage, Speaker Short, and Thermal Overload Can Drive Highly Reactive Loads Optically Isolated Mosfet Power Supply Quiet Internal Fan Cooling Specifications: 2-Channels @ 4 Ohms 400 Watts 2-Channels @ 2 Ohms 600 Watts 1-Channel @ 4 Ohms (Bridged) 1200 Watts Frequency Response 5Hz - 50kHz Crossover Range 55Hz - 5500Hz Bass Boost 15dB @ 45Hz S/N Ratio CEA2006 @ 1W 95.1dB S/N Ratio @ Full Power 112.0dB Input Sensitivity (Low) 200mV - 3.5V Max Current Draw 120A @ 1200 Watts 1% THD Idle Current 1.14 Amp Fuse 4 x 30 Amp Dimensions 15.5(L) x 8.0"(W)x2.375"(H)