Frankies Auto Electrics & Car Audio

Albion Park (02) 4257-2636 | South Nowra (02) 4423-5254

2 Great Locations | $9 Flat Rate Shipping

Help Center
Need help?
Chat our product expert
Availability:In Stock

Fusion MS-AM504 500W 4 Channel Marine Amplifier

Free Shipping



Frankies Auto Electrics and Car Audio eGift Card
99.5% Positive feedback
  • Consistently receives highest buyers ratings
  • Ships items quickly
  • Has earned a track record of excellent service



Value-Packed and Purpose-Built for Quality Audio Amplification on the Water!


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.

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


  • 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

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″]

Fusion MSAM504 Specs

Weight 3.6 kg

Fusion: Navigating the Waves of Innovation in Automotive and Marine Electronics

Fusion, a brand synonymous with cutting-edge technology and quality, has established itself as a leader in both the automotive and marine electronics industries. With a commitment to innovation, durability, and user-friendly designs, Fusion’s diverse range of products consistently meets the needs of both casual users and professionals alike.

Read More
Brand Image for Fusion


There are no reviews yet.

Be the first to review “Fusion MS-AM504 500W 4 Channel Marine Amplifier”

Your email address will not be published. Required fields are marked *

featured products

You're viewing: Fusion MS-AM504 500W 4 Channel Marine Amplifier $468.14$479.00
Add to cart
Select the fields to be shown. Others will be hidden. Drag and drop to rearrange the order.
  • Image
  • SKU
  • Rating
  • Price
  • Stock
  • Availability
  • Add to cart
  • Description
  • Content
  • Weight
  • Dimensions
  • Additional information
Click outside to hide the comparison bar
Shopping cart close