Kicker KMA360.4 4-Channel Marine Amplifier

The Kicker KMA360.4 is a compact and efficient 4-channel marine amplifier designed for reliable everyday performance on the water. Built for marine environments, it delivers clean, balanced power for speaker upgrades while maintaining excellent durability and resistance to moisture, vibration, and harsh outdoor conditions.

Using a Class A/B design, the KMA360.4 delivers up to 65 watts RMS per channel at 4 ohms (or up to 90 watts RMS per channel at 2 ohms), with bridging capability providing up to 180 watts RMS across two channels. This makes it a versatile solution for powering marine speaker upgrades or small system configurations where clarity and reliability are essential.

With up to 500 watts of dynamic power, the KMA360.4 ensures strong audio performance across the vessel, making it ideal for smaller boats or entry-level marine audio upgrades. Despite its compact size, it delivers impressive clarity and output for its class.

Engineered for marine conditions, this amplifier features a conformal-coated circuit board, stainless-steel hardware, and ABYC/NMMA-compliant power connections for long-term reliability in wet and high-vibration environments.

A variable 12dB crossover network and KickEQ™ bass boost allow simple but effective tuning, giving users control over system balance and low-frequency response. This ensures your marine audio system can be adjusted for clear, enjoyable sound on the water.

Features

• 4-channel marine Class A/B amplifier
• Compact and efficient design for smaller systems
• Bridgeable channels for flexible configurations
• Conformal-coated circuit board for marine protection
• Variable 12dB crossover network (50–200Hz)
• KickEQ™ bass boost (up to 6dB at 40Hz)
• ABYC/NMMA-compliant power connections
• 316L stainless-steel hardware included
• Designed for marine environments and outdoor durability

Power Ratings

• 65W RMS x 4 @ 4 Ohms
• 90W RMS x 4 @ 2 Ohms
• 180W RMS x 2 Bridged @ 4 Ohms

Dynamic Power

• 500 Watts Dynamic Power

Specifications

• Amplifier Type: Class A/B
• Frequency Response: 10Hz – 20kHz (+0/-1dB)
• Signal-to-Noise Ratio: >95dB (A-weighted)
• Input Sensitivity:
  • High Level: 250mV – 10V
  • Low Level: 125mV – 5V
• Active Crossovers: Variable 50Hz – 200Hz, selectable High Pass / Low Pass / All Pass
• KickEQ™ Bass Boost: 0–6dB at 40Hz
• Dimensions: 315mm (L) x 180mm (W) x 59mm (H)

Ideal For

• Entry-level marine audio systems
• Small boats and leisure craft
• Speaker upgrades from factory systems
• Compact installations requiring reliable amplification
• Customers wanting simple, clean sound improvement on the water

The Kicker KMA360.4 is a reliable and affordable marine amplifier that delivers clean power, simple tuning, and durable construction, making it a great entry point for upgrading any boat audio system.