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Fusion - MS-AM504 -- 500 Watt 4 Channel Marine Amplifier Front/Rear

  • $ 369.99 USD

The FUSION AM Series marine amplifiers are purpose-built for the marine environment. Boasting some of the most impressive environmental protection available, they deliver performance on the water like never before.

With 4 channels and a 500 Watt peak power output, the MS-AM504 will power either a pair of Fusion speakers plus a 10” subwoofer, or up to four pairs of speakers (with 2 speakers in parallel each channel at 2 Ohms), to spread the sound around your vessel.

Incorporating heat-tempered and conformal coated PCBs for maximum product life, and gold-plated connectors for improved signal flow, the MS-AM504 reproduces clean and powerful audio with enough power to rock the boat.


  • 500W peak power output to power up to eight speakers
  • Class-AB amplifier – power efficient with less cross-over distortion
  • Conformal coated PCBs – water resistant protection from salt air and moisture
  • FUTRANZ heat sink technology – transfers heat more efficiently and provides more thermal stability with maximum component reliability
  • F.R.A.T (Fusion Regulated Amplifier Technology) – provides enormous power output at low voltage.
  • F.I.S.T (Fusion Intercooled Semi-Conductor Technology) – clamps down internal power switching to rapidly remove heat from all associated semi-conductors
  • 1 year limited Consumer Warranty

The Fusion AM Series marine amplifiers are the perfect complement to any Fusion marine stereo system.


Product Specifications

Amplifier Class Class-AB
Frequency Response 5Hz - 38kHz +/- 3dB
Peak Power 500 Watts
Rated Power (4 Ohms) 65 Watts RMS x 4 @ 14.4V - 4Ω 1% THD
Rated Power (2 Ohms) 100 Watts RMS x 4 @ 14.4V - 2Ω 1% THD
Rated Power (4 Ohms Bridged) 200 Watts RMS x 2 @ 14.4V - 4Ω Bridged 1% THD

Mounting Dimensions

Length 366mm [14-7/16"]
Depth 229mm [9"]
Height 53mm [2-1/16"]

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