KICKER 48KMA6004 600W 4-Channel Marine Amplifier — KMA600.4

Powerful, efficient amplification for your marine audio

The KICKER 48KMA6004 is a rugged four‑channel marine amplifier built to perform on water. With Class D efficiency and a dynamic 725‑watt reserve, it delivers clean, loud sound across a full boat audio system while keeping heat and power use in check.

Key features that help you customize your sound

• Class D power plant delivering up to 725 watts of dynamic power for confident listening without unnecessary heat
• Four channels with bridging capability, enabling up to eight speakers for a fuller, more immersive sound
• Conformal-coated circuit board to resist moisture and corrosion in salty environments
• Variable 12 dB/octave crossover to shape highs and lows for clearer vocals and tighter bass
• KickEQ variable bass boost up to 6 dB, centered around 40 Hz, for a punchier low end
• Real marine ABYC/NMMA‑compliant power connections and included 316L stainless‑steel hardware

Real-world use cases and benefits

Imagine a weekend on the water with friends and family, where the cockpit and bow each have speakers tuned for wide dispersion. With eight speaker options, the amp helps your whole boat feel like a concert space, while the adjustable crossover keeps highs clear and bass controlled even at higher volumes.

Whether cruising, wakeboarding, or dockside hangs, this unit's robust construction and corrosion‑resistant hardware are designed for longevity in marine conditions. Its compact footprint fits common install spaces, and the stainless fittings resist salt spray to keep connections reliable over time.

Specs at a glance

• Power (2 Ω stereo): 150 W × 4
• Power (4 Ω bridged mono): 300 W × 2
• Dynamic power: 725 W
• Frequency response: 10 Hz – 20 kHz
• Inputs: High and low level with adjustable sensitivity