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 KM amps. Variable 12dB crossovers are built in, plus a 24dB subsonic filter is also included on the KMA600.1 mono amplifier, and Amp 3 of the KMA450.6. The amplifiers are also equipped with the KickEQ™ variable 12dB bass boost! IN THE ZONE KICKER created the KMA450.6 to power up to three independent full-range zones! This six-channel, 450-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. Another zone is controlled with the included full-range volume knob, which can be mounted on (or under) nearly any flat surface. FULL RANGE FUN Using Class A/B power, this amp features a variable bass boost with KickEQ™, giving you as much as a 12dB of extra bump. A powerful 12dB crossover is also included, letting you quickly tune your system to perfection. Class A/B Power Supply Stereo Amplifier With Bridging Capability Conformal-Coated Circuit Board Variable 12dB Crossover KickEQ™ Variable 12dB Bass Boost ABYC/NMMA-Compliant Power Connections 316L Stainless-Steel Hardware Included This KM-Series amplifier delivers as much as 75 watts into two channels, or 150 watts bridged into one channel. See below for more details. | Weather Resistance Conformal-Coated Number of Channels 2 Class AB 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 1% Bulit-in Crossover - Low Pass Yes Built-in Crossover - High Pass Yes High Pass Crossover Frequency (Hz) 50-200Hz Low Pass Crossover Frequency (Hz) 50-200hz Signal-to-Noise Ratio 75dB Bass Boost 0-12dB @40Hz Bass Remote Included No Fuse Rating 40A CEA-2006 Compliant Maximum Power Wire Gauge Size 8 Gauge Warranty 1 Year