Rating Content :
MA6004 is rated 3.0 out of 5 by 4.
Performance: JBL Header Total:: 37843491325995647 - 37843491623764647 = 297769 micro seconds
Performance: product-images:: 37843491628457647 - 37843491629973647 = 1516 micro seconds
  • MA6004 - 320-watt, four-channel marine amplifier
    All Weather Durability
    Speaker cone is polymer-coated cellulose fiber for greater resistance to the elements.
  • MA6004 - 320-watt, four-channel marine amplifier
    4-Channel Amplifier
    A system amplifier that features multiple channels that can power an entire system.
Upgrade the sound on your boat with JBL® power that can take on the open seas. The MA6004 has marinized circuit boards to keep salt air and corrosion away and survive brutal conditions. You’ll have tuning options for systems of any size, variable bass boost and easy installation in tight spaces. Your next party out there? It can sound great.

What's In The Box

  • (1) MA6004 4-Channel Full-Range Marine Amplifier
  • (1) Owner's Manual

Product Specs, Manuals & Compatibility

Compatible with TVs, Laptops, and Mobile devices
Manuals & Downloads
General Specifications
Audio Specifications
Input Sensitivity
Signal-to-Noise Ratio
Damping Factor
6.395 at 4 ohms
Dynamic Power Output
145W at 2 ohms
USA Warranty Length
1 Year Warranty
Product Features
Engineered for harsh marine conditions
With a marinized circuit board, stainless-steel hardware and all the right waterproofing, the MA6004 is, like all JBL® marine audio products, built to survive salt water, corrosion and other risks – and show you a great time out on the water.
Tuning options for systems of any size
The JBL® MA6004 has onboard 12dB electronic crossovers, giving you tuning options for systems of any size. Versatility, convenience and ease of use are all part of the JBL way of sound.
Optimize performance in any location
Your boat may give you a choice of where to install your sound system, or it may not. Fortunately, the MA6004’s variable bass-boost circuit provides additional bass tuning to optimize performance, regardless of where it lives.
Easy installation in tight spaces
Owning a boat takes commitment and work. Installing the JBL® MA6004? Not so much. It’s also pretty compact at 13-1/4" x 10-1/4" x 2-3/16" (337mm x 261mm x 56mm) with a low-profile heatsink. You can put it in some very tight spots.
Big, dynamic power
The JBL® MA6004 has output of 60 watts RMS X 4 channels at 4 ohms. You can fill the fresh, open air with great sound.
Hide Specs
Performance: features:: 37843491630402647 - 37843491670893647 = 40491 micro seconds
Performance: reviews:: 37843491672791647 - 37843491691392647 = 18601 micro seconds

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MA6004 - 320-watt, four-channel marine amplifier
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Performance: dealer:: 37843491692513647 - 37843491696923647 = 4410 micro seconds
Item #: MA6004


Big, dynamic power for a fluid environment.
$149.95 ea.
Availability: Sold out.
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Performance: details:: 37843491704535647 - 37843491798057647 = 93522 micro seconds
Performance: PDP Total:: 37843491321093647 - 37843491809262647 = 488169 micro seconds