ACX-300.4

The AudioControl ACX-300.4 is a premium all-weather 4-channel amplifier designed specifically for motorcycles, boats, UTVs, side-by-sides, golf carts, and other outdoor audio applications. Its biggest strengths are weather resistance, compact size, clean power output, and excellent sound quality compared to many powersports amplifiers.

Unlike many budget marine amps that exaggerate power ratings, AudioControl is known for “honest power” and strong signal quality. The ACX-300.4 is especially popular in Harley-Davidson, RZR, Can-Am, and marine audio builds where reliability and clean volume matter more than just raw wattage.

Key Features

• 4-channel Class D amplifier
• IPX6 waterproof/weather-resistant rating
• Compact chassis for tight installs
• Marine & powersports rated
• GTO™ signal-sensing turn-on
• High-level & RCA inputs
• Waterproof input/output/power connections
• Selectable high-pass crossovers
• Linkwitz-Riley crossover design
• Quick-connect heavy-gauge harnesses
• Aluminum extruded heatsink chassis

Power Ratings

• 50W RMS × 4 @ 4Ω
• 75W RMS × 4 @ 2Ω
• 150W RMS × 2 bridged @ 4Ω

Performance Specifications

• Frequency Response: 26Hz–22kHz
• Signal-to-Noise Ratio: 106 dBA
• THD+N: <0.2%
• Recommended Power Wire: 8 gauge
• Dimensions:
  • 10.7" W
  • 3.87" D
  • 2.38" H