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Rockford Fosgate

Rockford Fosgate Prime 400 Watt Full-Range 4-Channel Car Amplifier - R4004D

Abt Model: R4004D | UPC Code: 780687333119
 Discontinued Product This item is no longer available from our website.
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Rockford Fosgate - R4004D - Car Audio Amplifiers
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400 Watts Total Power/ 12dB/Octave Butterworth Crossover/ RCA Pass-Thru Outputs/ Tri-stage Protection Covers Thermal, Over-Current And Short Circuits/ On-Board Punch EQ With +18dB Boost At 45Hz/ 2/4 Channel Switch/ 4 Gauge Power/Ground Connectors/ Cast Aluminum Heatsink/ Top Mounted Controls/ Black Finish
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Your Shipping Zip Code: 07095 (change)
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Product Details

Rockford Fosgate Prime 400 Watt Full-Range 4-Channel Car Amplifier - R4004D

The PRIME R400-4D is an ultra-efficient 4-channel amplifier producing 100 Watts into four channels at 2-Ohms. Run a 4-way full-range system or use it with components on the front channels with subwoofers on the rear.


  • 12dB/octave Butterworth crossover
  • RCA pass-thru outputs
  • Tri-stage protection covers thermal, over-current and short circuits
  • On-board Punch EQ with +18dB boost @ 45Hz.
  • 2/4 channel switch
  • 4 Gauge power/ground connectors
  • Cast aluminum heatsink
  • Top mounted controls


  • Number of Channels 4
  • Rated Power (RMS Continuous Power)
    • 75 Watts x 4 @ 4-Ohm
    • 100 Watts x 4 @ 2-Ohm
    • 200 Watts x 2 @ 4-Ohm Bridged
  • Total Power (Sum of Rated Power) 400 Watts RMS
  • Bridgeable Yes
  • Efficiency (average):
    • 80% @ 4-Ohm
    • 75% @ 2-Ohm
  • Crossover Controls:
    • Front: Variable 50Hz - 500Hz @ 12dB/Octave
    • Rear: Variable 50Hz - 500Hz @ 12dB/Octave
  • Tone Controls 0dB to +18dB @ 45Hz
  • Signal Input: Low Level: 2 RCA Pair
  • Signal Output: Low Level: 1 RCA Pair
  • Power Input Connector Block
  • Power Wire Gauge 4 AWG
  • Speaker Output Connector Block
  • Speaker Wire Gauge 12 AWG
  • Heat Sink Type Cast aluminum
  • Cooling Convection
  • Visual Indicators:
    • Power
    • Protect
  • Circuit Topology Class Full Range Class-D
  • Frequency Response 20Hz to 20kHz +/-1dB

Approximate Dimensions:

  • Height: 1.97"
  • Width: 6.77"
  • Length: 9.10"

Approximate Weight:

  • Shipping: 6 lbs

Warranty Information:

  • Manufacturer Warranty (authorized online retailer): One Year Parts & Labor
  • Extended Service Warranty Available: Click the warranty tab above for details
More reasons to buy the Rockford Fosgate R4004D from Abt Electronics
  • is an authorized dealer (Learn More).
  • The Rockford Fosgate R4004D is Brand New.
  • The Rockford Fosgate R4004D Ships in a Factory Sealed Box.
  • Abt ships this product for free!
Rockford Fosgate Prime 400 Watt Full-Range 4-Channel Car Amplifier

Rockford Fosgate Prime 400 Watt Full-Range 4-Channel Car Amplifier


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