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JBL 320W 4-Channel Marine Boat Amplifier (MA6004)

Out of stock

Quick Overview
Marine Series 320 Watts 4-Channel Class AB Marinized Boat Amplifier by JBL


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 the brutal conditions of heavy waves and harsh weather. You’ll have tuning options for systems of any size, variable bass boost and easy installation in tight spaces. You’d be hard pressed to find a better audio system for any voyage, whether it’s a leisurely afternoon on a placid lake or a race across the Atlantic. And your next party out there? It can sound great!


  • JBL marine amplification has been engineered to withstand harsh marine conditions, with fully “marinized” circuit boards to ensure flawless power delivery, year after year
  • Onboard 12dB electronic crossovers provide tuning options for systems of any size
  • Variable bass-boost circuit provides additional bass tuning to optimize performance, regardless of location
  • Low-profile heatsink allows for installation in tight spaces


  • 60W RMS x 4 channels at 4 ohms and ≤1% THD + N
  • Signal-to-noise ratio: 80dBA (reference 1W into 4 ohms)
  • 80W RMS x 4 channels at 2 ohms, 14.4V supply and ≤1% THD + N
  • 160W RMS x 2 channels at 4 ohms, 14.4V supply and ≤1% THD + N
  • Dynamic power: 145W at 2 ohms
  • Effective damping factor: 6.395 at 4 ohms
  • Frequency response: 10Hz – 27kHz (–3dB)
  • Maximum input signal: 6V
  • Maximum sensitivity: 100mV
  • Output regulation: –0.03dB at 4 ohms
  • Dimensions (L x W x H): 13-1/4" x 10-1/4" x 2-3/16" (337x261x56 mm)
  • Fuses: 25A x 2

More Information

Brand JBL
MPN MA6004
Model MA6004
UPC 050036119108
Condition New
Featured Yes
Warranty 1 Year (by Manufacturer)
Amplifier Class AB
Number of Channels 4 Channel
Peak Power 320 Watts
Power at 4 Ohms 60W RMS x 4
Power at 2 Ohms 80W RMS x 4 @ 14.4V
Bridged Power 160W RMS x 2 @ 4 ohms, 14.4V
Signal-to-Noise Ratio 80dBA (1W into 4 ohms)
Frequency Response 10Hz – 27kHz (–3dB)
Bass Boost Variable
Fuse Rating 25A x 2
Length 13-1/4" (337mm)
Width 10-1/4" (261mm)
Height 2-3/16" (56mm)
Highlights Water-Resistant
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