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Rockford Fosgate R400-4D 4-Channel Amplifier

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  • Rockford Fosgate Prime R400-4D 4 Ch Amplifier
  • Rockford Fosgate Prime R400-4D 4 Ch Amplifier

List Price: $349.00 On Sale: $282.85 (GST Included) (You save 18.95%)

SKU: R4004D


$9.95 Flat Rate Generally ships out in 24 to 48 hours.


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Product Info

Product Info

Check out the Rockford Fosgate Prime R400-4D 400 Watts Full-Range 4-Channel Amplifier's Key Features
(Rockford Fosgate R4004D)

  • 12 Month Australian Warranty
  • Risk Free Purchase Guarantee (bottom of page)
  • 4 Channel Class D Amplifier
  • 75 watts x 4 RMS in 4 ohm
  • 100 watts x 4 RMS in 2 ohm
  • 400 watts RMS (total power)
  • Punch Bass EQ
  • 12db Octave Crossover
  • High and Low Pass Crossovers
  • MOSFET Power Supply


The Rockford Fosgate R400-4D amplifier is a 4 channel amplifier rated at 400 watts RMS (total) designed for running front and rear channels. This amplifier also utilises Class D technology, delivering higher efficiencies whilst maintaining a smaller foot print.

The Rockford Fosgate Prime series of amplifiers deliver Rockford Fosgate's technologies at a price point that make similar comparable amplifier brands seem expensive. The Rockford Fosgate prime amplifiers are 2 ohm capable and feature on board Punch Bass control. All Rockford Fosgate amplifiers are CEA 2006 compliant meaning the rated power of the amplifier is certified true and accurate, many other amplifiers quote extreme peak power output but when tested, if they dare, never live up to their ratings. Rockford Fosgate Prime amplifiers deliver true reliable power to your speakers and subwoofers.

Rockford Fosgate - The Company

In 1973, in a garage, Jim Fosgate created his first car amplifier and the Rockford Fosgate brand was born. Since then Rockford Fosgate has been at the forefront of the car audio industry creating some of the loudest and toughest car speakers and car amplifiers money can buy without sacrificing sound or build quality.

Peace of Mind Purchase Guarantee & Declaration of Warranty
This product is directly imported and is offered with a full Australian 12 month warranty. (You may also be entitled to other consumer warranties as provided by the Australian Consumer Guarantee and these entitlements are not limited by this warranty). In the event that this product should fail please contact our service department to arrange service for this product.

We are not linked or associated with Rockford Fosgate.

This product will be shipped from our Sydney Warehouse and you are welcome to pick it up directly from our store in Sydney. This product is NOT DROP SHIPPED from overseas.

Due to differing operating costs associated with selling products via different marketplaces such as eBay, Amazon or our Online Store, our pricing may vary as a result.

Tech Specs

Technical Specifications

Power Handling
RMS Power: 75 watts x 4 RMS in 4 ohm
RMS Power: 100 watts x 4 RMS in 2 ohm

Frequency Response: 20 Hz to 20 KHz
Impedance: 4 ohms / 2 ohms
Power Protection Built In
Heat Sink Type: Extruded Aluminium
Power Connection: 4 AWG
Bridgeable: Yes
Technology: Class D

Crossover: High Pass and Low Pass for Channels 1 through 4
Tone Control: Punch Bass 0db to +12db

In The Box

What's Included?

  • 1 x Rockford Fosgate Prime R400-4D 400W 4-Channel Amplifier

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