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Rockford Fosgate R300X4 4-Channel Amplifier

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

List Price: $299.00 On Sale: $238.85 (GST Included) (You save 20.12%)

SKU: R300X4


$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 R300X4 300 Watt 4-Channel Amplifier's Key Features
(Rockford Fosgate R300X4)

  • 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 Prime series amplifiers deliver Rockford Fosgate's technologies at a price point that make 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.

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

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

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" / 5 x 17.2 x 33.5 cm

In The Box

What's Included?

  • Rockford Fosgate Prime R300X4 4-Channel Amplifier

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