NEED HELP? CALL US: 02 9568 8888

Shopping Cart 0 items · $0.00

    (All items shipped from our Sydney warehouse)


    $9.95 on all orders

    Heavy Items Excluded


    Best Prices & Price Matching


    Money Back Guarantee

Free Shipping

Free Shipping

Click on above image to view full picture

  • Rockford Fosgate Prime R300X4 4 Channel Amplifier
  • Rockford Fosgate Prime R300X4 4 Channel Amplifier
  • Rockford Fosgate Prime R300X4 4 Channel Amplifier

Rockford Fosgate Prime R300X4 4 Channel Amplifier

Product Code : R300X4

List Price: $269.00 On Sale: $218.85 (GST Included) (You save 18.64%)

Warranty Terms & Conditions




Product Info

Product Info

Rockford Fosgate Prime R300X4 4 Channel Amplifier

We Think You Should Know

  • 12 Month Australian Warranty
  • Risk Free Purchase Guarantee (bottom of page)
  • 4 Channel Amplifier
  • 300 watts RMS
  • RMS 50 Watts x 4 @ 4-Ohm
  • RMS 75 Watts x 4 @ 2-Ohm
  • RMS150 Watts x 2 @ 4-Ohm Bridged
  • Prime Bass EQ
  • 12db Octave Crossover
  • MOSFET Power Supply

Rockford Fosgate - The Company
In 1973 in a garage Jim Fosgate created his first car amplifier and the rest is history, 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.

Rockford Fosgate Prime R300X4 - The Amplifier
The Rockford Fosgate Prime series of amplifiers deliveries 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.

This amplifier is a 4 channel rated at 300 watts RMS in 2 ohm mode designed specifically for powering subwoofers. The R300X4 Rockford Fosgate amplifier also utilises Class D technology so it can use less power to obtain its rated power output.

Built more solid, better bass, higher power handling, incredible sound, no need to say anymore.


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 Car Audio.

Our decision to import this product is in line with our company objectives to 'Offer our Customers the very best prices on the world's biggest brands and make sure our service is second to none'.

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.

Tech Specs

Technical Specifications

Number of Channels: 4

Power Handling

  • Rated Power (RMS Continuous Power): 50 Watts x 4 @ 4-Ohm
  • Rated Power (RMS Continuous Power): 75 Watts x 4 @ 2-Ohm
  • Rated Power (RMS Continuous Power): 150 Watts x 2 @ 4-Ohm Bridged
  • Total Power(Sum of Rated Power): 300 Watts RMS
  • Dynamic Power (PVC/PowerCube® Measurement): 76 Watts x 4 @ 4-Ohms 0° Res
  • Dynamic Power (PVC/PowerCube® Measurement): 100 Watts x 4 @ 2-Ohms 0° Res


  • Bridgeable: Yes
  • Efficiency (average): 69% @ 4-Ohm
  • Crossover Controls:
  • Front Channels: High-Pass/Low-Pass (HP/LP): 50-250Hz @ 12dB/octave Butterworth
  • Rear Channels: High-Pass/Low-Pass (HP/LP): 50-250Hz @ 12dB/octave Butterworth
  • Tone Controls:
  • Front Channels: Punch Bass: 0dB/+6dB/+12dB @ 45Hz
  • Rear Channels: Punch Bass: 0dB/+6dB/+12dB @ 45Hz
  • Function works when crossover in (LP) position


  • Signal Input: Low Level: 2 RCA pair
  • Signal Output: n/a
  • Power Input Connector: Screw terminal
  • Power Wire Gauge: 4 AWG
  • Speaker Output Connector: Screw terminal
  • Speaker Wire Gauge: 8 AWG
  • Heat Sink Type: Extruded Aluminum
  • Cooling: Convection

Remote Controls:

  • Visual Indicators: Power/Protect LED
  • Circuit Topology Class: Class-A/B
  • Frequency Response: 20Hz to 20kHz +/-1dB
  • Dimensions (HxWxL): 1.98 x 6.77 x 13.19 (in)
  • 5 x 17.2 x 33.5 (cm)
In The Box

What's Included?

  • Rockford Fosgate Prime R300X4 4 Channel Amplifier

No Reviews Available

  •   1 star 2 stars 3 stars 4 stars 5 stars

* Required Fields