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AudioControl ACX-300.44-channel powersports/marine amplifier — 50 watts RMS x 4

Waterproof power

One of the main issues with powersports amplifiers used to be that the amp wouldn't survive a thorough washing of your vehicle after a good day of dirty fun. AudioControl's ACX-300.4 four-channel amplifier carries an IPX6 waterproof rating, which means you can clean it off with a powerful water jet spray and it won't hurt a thing. Construction details include conformal circuit board coatings, insulated gaskets for the control panel cover, and waterproof input, output, and power connections.

Play your music loud and clear

The ACX-300.4 can send out 50 watts RMS per channel — plenty enough to hear your music clearly over the sounds of wind and motor. Like it loud? This amp can also operate in two-channel mode to power a pair of high-performance speakers with 150 watts RMS each.

Some practical features

This tiny, hand-size amp will fit almost anywhere in almost any kind of vehicle, and it features high-level inputs with signal-sensing turn-on, so it'll work with almost any stereo system. To simplify setup, a "Maximized" LEDs indicate when you've set the amplifier's gains for optimum performance.


Product highlights:

  • 4-channel powersports/marine amplifier
    • 50 watts RMS x 4 at 4 ohms
    • 75 watts RMS x 4 at 2 ohms
    • 150 watts RMS x 2 bridged at 4 ohms
  • Class D amp technology
  • selectable high-pass filter (bypass, 80, 120 Hz at 12 dB/octave) on front and rear channels

More Info:

  • IPX6 rated chassis will withstand power washing
  • waterproof input, output, and power connections
  • preamp and speaker-level inputs
    • GTO™ (Great Turn On) signal-sensing turn-on with speaker-level input
  • wiring and hardware not included with amplifier
    • 8-gauge power and ground leads recommended
  • dimensions: 10-3/4"W x 2-7/16"H x 3-7/8"D

What's in the box:

AudioControl ACX-300.4 owner's manual

If you need assistance accessing this owner's manual, please give us a call.
  • 4-Channel amplifier (attached 12" power/ground/input/output harnesses)
  • 7" Power & ground harness (10 ga.)
  • Two 7" speaker output harnesses
  • Power & ground harness (empty)
  • 2 Crimp-on terminals for power & ground harness
  • Harness locking pin
  • 2 Rubber grommets
  • Four 3/4" screws
  • Quickstart guide