Kicker KMA360.4 4-Channel Marine Amplifier (48KMA3604)

Factory head units can't push marine speakers loud enough to cut through wind and engine noise. The KMA360.4 fixes that. This four-channel Kicker marine amp delivers 90 watts per channel at 2 ohms (65 at 4 ohms). You can also bridge it to 180 watts x 2, so one amp can run cockpit speakers and a free-air sub, or up to eight speakers.

It's built for the water. The circuit board is conformal-coated, and the REAL MARINE ABYC/NMMA-compliant power connections and 316L stainless hardware are made to resist salt and moisture. The variable 12dB crossover (50–200 Hz, high-pass/low-pass/off) and KickEQ bass boost (up to 6dB) let you tune the system from the swim platform to the helm.

Best for: center consoles and pontoons upgrading four to eight speakers, or a speakers-plus-sub system on a single amp.

Pairs with: Kicker KM 6.5" or 8" marine coaxials, the KMF12 free-air sub, and the 48KMBLC bass remote.

Key Specs

• Power: 90W x 4 @ 2Ω; 65W x 4 @ 4Ω; 180W x 2 bridged @ 4Ω
• Dynamic power: 500W (Class A/B)
• Crossover: variable 50–200 Hz, 12dB/oct, HP/LP/off
• KickEQ variable bass boost up to 6dB
• Conformal-coated board; ABYC/NMMA-compliant connections; 316L stainless hardware
• Dimensions: 2-5/16"H x 7-1/8"W x 12-7/16"L

FAQ

How many speakers can the KMA360.4 power?

Up to eight speakers, or four speakers plus a bridged subwoofer.

Is it waterproof?

It is marine-built with a conformal-coated board and stainless hardware. Mount it in a dry, ventilated spot out of direct spray.

Does it work with a factory boat stereo?

Yes. It accepts high-level (speaker) inputs from 250mV to 10V, as well as RCA low-level inputs.

Why Buy from Ocean Rock Audio

Ocean Rock Audio is South Florida's Kicker marine boat speaker specialist and an authorized Kicker dealer, so your purchase carries the full Kicker manufacturer warranty. Tell us your boat and we'll help you match speakers, subs and amps before you order.