TOP TECH Purpose-built for your boat, every KM amp comes complete with marine-grade speaker terminals, stainless-steel screws, conformal-coated circuit boards and ABYC/NMMA-compliant power connections. TUNED Dialing in your sound is easy with KMA amps. Variable 12dB crossovers are built in, plus a 24dB subsonic filter is also included on the KMA800.1 mono amplifier, and Amp 3 of the KMA600.6. The amplifiers are also equipped with the KickEQ™ variable 6dB bass boost! IN THE ZONE KICKER created the KMA600.6 to power up to three independent full-range zones! This six-channel, 600-watt amp provides an easy way to get the perfect volume levels on (or off) the deck, in the water, or inside the cabin. Control the volume of one zone with the receiver. FULL-RANGE FUN Using Class A/B power, this amp features a variable bass boost with KickEQ™ giving you as much as 6dB of extra bump. A powerful 12dB crossover is also included, letting you quickly tune your system to perfection. Class A/B 190 Watts of Dynamic Power Stereo Amplifier with Bridging Capability Conformal-Coated Circuit Board Variable 12dB Crossover KickEQ™ Variable 6dB Bass Boost Real Marine™ ABYC/NMMA-Compliant Power Connections 316L Stainless-Steel Hardware Included | Weather Resistance Conformal-Coated Number of Channels 2 Class Peak Power Rating (Watts) RMS Power Rating (Watts x Channels) - 4 Ohms 40 x 2 RMS Power Rating (Watts x Channels) - 2 Ohms 75 x 2 RMS Power Rating - Bridged 150 x 1 Minimum Impedance Unbridged (Ohms) 2 Minimum Impedance Bridged (Ohms) 4 THD at Rated RMS Power