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. BIG BUMP Experience the perfect way to get bass on your boat! A mighty Class-D power plant, 12dB crossover and subsonic filter all help you dial in the best sound. Use the remote level control to adjust the bass right from the dash and connect the full-range RCA outputs to expand your system! Class-D Power Supply Mono Amplifier Conformal-Coated Circuit Board Remote Level Control Included Variable 12dB Crossover KickEQ™ Variable 12dB Bass Boost 24dB Subsonic Filter Full-Range RCA Output ABYC/NMMA-Compliant Power Connections 316L Stainless-Steel Hardware Included This KM-Series amplifier delivers as much as 600 watts into one channel. See below for more details. | Weather Resistance Conformal-Coated Number of Channels 1 Class D Peak Power Rating (Watts) RMS Power Rating (Watts x Channels) - 4 Ohms 300 x 1 RMS Power Rating (Watts x Channels) - 2 Ohms 600 x 1 RMS Power Rating - Bridged N/A Minimum Impedance Unbridged (Ohms) 2 Minimum Impedance Bridged (Ohms) N/A THD at Rated RMS Power 1% Bulit-in Crossover - Low Pass Yes Built-in Crossover - High Pass N/A High Pass Crossover Frequency (Hz) N/A Low Pass Crossover Frequency (Hz) 50-200hz Signal-to-Noise Ratio 75dB Bass Boost 0-12dB @40Hz Bass Remote Included No Fuse Rating 80A CEA-2006 Compliant Maximum Power Wire Gauge Size 4 Gauge Warranty 1 Year