Rockford Fosgate R300-4 (R3004) 400W 4-Chan Class A/B Prime Amp

Rockford Fosgate PRIME R300-4

300W Prime Series 4-Channel Amplifier

300W Prime Series 4-Channel Amplifier

• 50 Watts x 4-Chan. @ 4 Ohms
• 75 Watts x 4-Chan. @ 2 Ohms
• Selectable Bass Boost
• 2-Way System Protection Circuitry
• Extruded Aluminum Alloy Convection Heat Sink

Good news and a little bad...

This item has been discontinued

But you may be interested in the newest model that's available.

r300x4 thumbnail

Rockford Fosgate Prime R300X4

OUR PRICE: $239.99

View item
DESCRIPTION
Rockford Fosgate

Authorized dealer

  • Prime Series 4-Channel Class A/B Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 50 watts x 4 chan.
    • 2 ohms: 75 watts x 4 chan.
    • Bridged, 4 ohms: 150 watts x 2 chan.
  • MOSFET power supply and output stage
  • LED power and protect indicators
  • Bass Boost/EQ details: selectable bass boost (0, 6, 12 dB at 45Hz)
  • 4/3/2 channel operation
  • 2-Way System Protection circuitry (overload and speaker short protection)
  • Adjustable gain from 150mV to 8V
  • Heavy duty extruded aluminum alloy convection heat sink for extreme heat dissipation
  • Nickel-plated RCA level inputs
  • Nickel-plated screw terminals
  • Variable high-pass filter (80 Hz)
  • Variable low-pass filter (50-250 Hz, 12 dB/octave Butterworth)
  • CEA-2006 compliant amplifier
  • Frequency response: 20-20,000 Hz
  • Dimensions: 17.09"L x 7.67"W x 2.40"H
  • 8-gauge power and ground wiring is required for installation. Contact us for information regarding a discount on select amplifier kits when purchased together with this amplifier.
  • 1-year SonicElectronix.com warranty

Product history:

Rockford Fosgate R300X4 thumbnail
(newest, current model)
Rockford Fosgate R300-4 thumbnail
(previous model, replaced by Rockford Fosgate Prime R300X4)
FEATURES & SPECS
Power Specifications - Full Range Channels
RMS Power @ 4 ohms
50 watts x 4 channels
RMS Power @ 2 ohms
75 watts x 4 channels
Bridged RMS Power
150 watts x 2 channels
Power Specifications - Full Range Channels
Peak Power @ 4 ohms
Peak Power @ 2 ohms
Peak Power @ 1 ohm
Bridged Peak/Max Power
Power Specifications - Subwoofer Channel
Peak Power @ 4 ohm
Peak Power @ 2 ohms
Peak Power @ 1 ohm
Amplifier Specifications
Amplifier Series
Prime (Rockford Fosgate)
Marine Certified
Amplifier Class
AB
Number of Channels
4
Total RMS Power Output
300 watts
Maximum Input Gauge Size
8 AWG
Minimum Impedance Unbridged
2 ohms
Minimum Impedance Bridged
4 ohms
THD at Rated RMS Power
1%
Speaker Level Inputs
No
Preamp Outputs
No
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
Full (AP)
High-Pass Crossover Frequency
80 Hz
Low-Pass Crossover Frequency
50 - 250 Hz
Signal-to-Noise Ratio
70 dB
Bass Boost
0, 6, 12dB
Bass/Gain Remote
No
Fan Cooled
No
Fuse Rating
25A x 2 
Total Fuse Rating
CEA-2006 Compliant
Yes
Hi-Res Certified
Authorized Dealer
Authorized Dealer
What is in the box?
WITB: Amplifiers
Other Accessory #1
Other Accessory #2
Other Accessory #3
Other Accessory #4
Other Accessory #5
Paperwork
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix
VIDEOS AND HOW - TO
  • 3Sixty3 Aftermarket Setup Wizard Tutorial
  • How To Install an Amplifier: Car Amplifier Basics Part 2
REVIEWS
Rockford Fosgate PRIME R300-4

Rockford Fosgate PRIME R300-4

4.8

(33)

Write a review

Overall rating distribution

5 star
79%
4 star
21%
3 star
0%
2 star
0%
1 star
0%

By feature average rating

Durability
4.8
Value
4.9
Features
4.7
Design
4.6
Usability
4.9

John

December 23, 2010

GOOD AMP

I don't have a whole lot of experience with car amps, but my home systems have always been the envy. My friends would spend twice as much as me, and would eventually just have to concede that my system had the best sound. I know what I'm doing. My electronics background, and years as a musician with perfect pitch hearing is my gift. I feel I hit it right on the mark again in building my relatively inexpensive car system, starting with this amp!!!
The amp is clean, and loud. Plenty loud for the little Nissan I have it in.
In a larger sedan, I might want to step up the watts, but I like it loud. I have this pushing the two front, and two rear speakers, with a separate powered sub. It was stinking hot this summer, and it's stinking cold now!!! I had no problems what so ever. I didn't wait till the car cooled down any before I cranked it up, and the amp handled all that heat in my black car.

9

found this helpful.

Maxwell

June 10, 2010

r300.4

I have this amp powering all my pioneer door speakers, i play it loud for extended amounts of time and no overheating at all, great sturdy amp at a unbeatable price.

10

found this helpful.

mark

January 8, 2014

amazing!

I love all RF products! this cheap amp literally pushes my cars speakers to their limits!
i dont have top notch audio, cause im a college student and i cant afford to spend 500 on a pair of mids/highs. But i do have 150/pair speakers in front and back on doors. JBL, to be exact.
Great amp!

8

found this helpful.

Martin

September 17, 2013

Rockford amp R300-4

Awesome sound and great price. I replace my old Power Acoustic 400 × 4 with this Rockford amp, and believe me, it sounds like a whole new system. A lot more powerful and stronger mids plus clear highs, what else you can ask.

7

found this helpful.

Mike

December 26, 2010

Great buy.

This is a good amp for 4 door speakers, its not small but it still fits under the seat in my truck. Sounds great, I love it!

8

found this helpful.

B. J.

August 22, 2010

Awsome amp!

I have this amp running 4 infinity reference 4x6 plates. My vocals are amazing! This amp doesn't get hot at all, and underrated in power. My birth sheet says 345 watts. To good to pass up on this product, a win win situation!

8

found this helpful.

Brandon

February 9, 2010

great product

This product is wonderful i have rockford before but i just love the look and style of this model

8

found this helpful.

jr

September 19, 2012

wow

wow ok so before this i had a sound storm 4 channel to power all 4 speakers now i have this baby and man does it make a difference!!!! the sound is so clear and loud. Now my 2 12s are in perfect match with my speakers!

6

found this helpful.

itsmedamnit

July 12, 2011

good amp but not a thumper

Amp works good. Watch your specs. The amp does what is says and that's it. Can't go on low ohm subs when bridged mono. If the rated specs are what you need then I would give it 5 stars. It sounds good and performs excellent. However, that's only 150 watts max per sub. Most subs require much more.

Excellent mid and tweet amp. No doubt

7

found this helpful.

brianp404

October 15, 2010

Great Deal!!!

This was a great product for a really great price.

7

found this helpful.

AJ

February 7, 2014

Great amp

I purchased this amp back in 2009 from my local car audio shop. at first i had some Memphis 6x9 and some 4x6 kickers. They sounded amazing. I later hooked up some 4x6 JBL power speakers and they sounded like 6.5 great mid-bass and clarity. anyways long story short i have hooked up different speakers to this amp and they all sounded great i currently have some 6x9 kickers and 6.5 PRV audio and some soundstream tweeters and it sounds fantastic.
Pros: its loud, clear, and reliable, I have taken 3 hour drives and had been bumping it almost non stop. (I did had to stop and put gas) the controls are easily accessible. easy to mount and you dont have to worry about the mounting feet breaking easily. doesn't get scratched up very easily eatheir.
cons: its somewhat bulky. on the instruction manual it says that it takes 4 gauge wire for power and ground but i could never get 4 gauge to fit unless you have some spades. it doesn't have high level inputs.

overall a great product and reliable.

6

found this helpful.

Dwayne

January 4, 2013

Will continue to buy from Sonic!

I was looking for an inexpensive amp to run the factory speakers in my 2003 Maxima.
-Amp works great
-Sonic ships to Canada and takes care of brokerage/duty at a reasonable price
-I will continue to use Sonic

5

found this helpful.

RYAN

February 17, 2012

Clean Straight up sound

I recently bought this amp and the sound, power, and price you cant beat. I am powering some diamond audio 6-1/2" components and factory 6x9s clean & pure sound. I recommend this amp to anyone who is looking for great undistorted sound. Pros- doesn't take up plenty space for the amount of power that it has, Cons-couldn't find any you cant go wrong buy this amp.

5

found this helpful.

bob

November 23, 2010

rockford fosgate prime speaker

like the speaker

7

found this helpful.

Carson

July 15, 2015

prime!!1

amp does its job. does get a little warm at times when run very hard

4

found this helpful.
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Searches Related to the Rockford Fosgate R300-4
ITEM DETAILS

Manufacturer:

Model Number:

R300-4

Weight:

9.00lbs

Internal SKU:

r3004

Internal Product ID:

19566

Item Added to Cart

300W Prime Series 4-Channel Amplifier

$124.99

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