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Rockford Fosgate Prime R300X4

300W 4-Channel Class AB Prime Series Full Range Amplifier

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• 50W x 4-Chan. @ 4 ohms
• 75W x 4-Chan. @ 2 ohms
• 150W x 2 Chan. @ 4 ohms Bridged
• Selectable Bass Boost, Punch EQ
• Variable High-Pass & Low-Pass Crossover
• CEA-2006 Compliant
• Soft Start Turn-On

Learn more about the r300x4
Was $279.99 Details
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$249.99

 with warranty

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Product Highlights


• 50W x 4-Chan. @ 4 ohms
• 75W x 4-Chan. @ 2 ohms
• 150W x 2 Chan. @ 4 ohms Bridged
• Selectable Bass Boost, Punch EQ
• Variable High-Pass & Low-Pass Crossover
• CEA-2006 Compliant
• Soft Start Turn-On

Description


Rockford Fosgate brand icon

Authorized dealer



The PRIME Choice

Rockford Fosgate amplification at an unbelievable value. The R300X4 4-channel amplifier is so versatile, it will be the only amplifier your system needs. Full-range or component speakers on the front channels and a single R1S410 10" or R1S412 12" woofer bridged/mono on the rear. Consider your system clean, loud and done!

Class-AB

An amplifier topology with the best of both worlds; a Class A preamp and Class B output stage. Class A topologies area great for sound quality but can require alot of current. Class B designs are great for power delivery. Amplifier designs utilizing a Class A/B topology reaps the benefit of great sound quality in the front-end (preamplifier stage) while delivering great power in the output stages (MOSFET drivers).

Rockford Fosgate R2-300X4

300W RMS Prime Series Class D 4-Channel Amplifier
Quantity: 1

Product Details:

  • Prime Series Class D 2 ohms Stable 4-Channel Amplifier
  • RMS Power Rating:
    • 4 ohms: 50 watts x 4 channel
    • 2 ohms: 75 watts x 4 channel
    • Bridged: 150 watts x 2 channel @ 4 ohms
  • Total power output: 300 watts
  • LED Power/Protect Light
  • Speaker-level (high-level) inputs
  • 1 pair of pre-amp outputs
  • CTA-2006 compliant
  • C.L.E.A.N. gain setup system
  • Auto remote turn-on
  • Input sensitivity:
    • Low level: .15 - 4 volts
    • High level: .45 - 12 volts
  • Frequency Response: 20 - 20000 Hz
  • Total Harmonic Distortion (THD): <1%
  • Signal to Noise Ratio: 70 dB
  • Variable high-pass filter: 50 - 250 Hz
  • Variable low-pass filter: 50 - 250 Hz
  • Fuse Rating: 60A
  • 4 AWG gauge amplifier wiring kit is recommended for installation
  • Dimensions: 10-1/16" L x 7-3/4" W x 2" H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty
  • MFR #: R2-300X4

Rockford Fosgate R2-300X4 Manual

Product history:

Rockford Fosgate R300X4 thumbnail
(newest, current model)
Rockford Fosgate R300-4 thumbnail
(previous model, replaced by Rockford Fosgate Prime R300X4)

Specifications & Details


Power Specifications - Full Range Channels
RMS Power @ 4 ohms
50 watts x 4 channel
RMS Power @ 2 ohms
75 watts x 4 channel
Bridged RMS Power
150 watts x 2 channel
Amplifier Specifications
Series
Prime Series
Amplifier Class
A/B
Number of Channels
4-Channel
Total Peak Power Output
600 watts
Total RMS Power Output
300 watts
Maximum Input Gauge Size
4 AWG
Minimum Impedance Unbridged
2 ohms
Minimum Impedance Bridged
4 ohms
THD at Rated RMS Power
1.0%
Speaker Level Inputs
Yes - with included adapter
Preamp Outputs
1 pair
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
Full (AP)
High-Pass Crossover Frequency
50 - 250 Hz
Low-Pass Crossover Frequency
50 - 250 Hz
Signal-to-Noise Ratio
100 dB
Channel Separation
50 dB
Bass Boost
Selectable 0/+6dB/+12dB
Remote bass/level controller
No
Fuse Rating
50A Fuse Recommended, Not Included
Strappable
No
Sonic Certified Amplifier
Not Tested
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

R300X4

Weight:

4.75lbs

Internal SKU:

r300x4

Internal Product ID:

67753

Product and How-to Videos


  • 3Sixty3 Aftermarket Setup Wizard Tutorial
  • Rockford Fosgate Prime Series Amplifiers
  • How To Install an Amplifier: Car Amplifier Basics Part 2

Customer Ratings & Reviews



5 star
91%
4 star
9%
3 star
0%
2 star
0%
1 star
0%



Durability
4.9
Value
4.9
Features
5
Design
4.6
Usability
5

Customer Reviews

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great amp for great price

This amp is powerful. Mine was rated at 402w rms. I have 2 6.5, 2 6x9, 2 5x7. Is not even half way up and they scream. Ordering 2 sets of Rockford p165 and 2 sets of p1692. Should sound better and cleaner. Rockford never disappoints me. Great product!

By Alex on January 11, 2015

41

found this helpful.

nice amp for the price

I ordered this amp for my boss and installed it in his truck along with some of the 6.5 prime series 2ways. The sound and clarity is perefect for the price it gets loud without distortion.

By James on March 16, 2015

34

found this helpful.

fab!

my son recommended the R300x4 to complete the sound system in my pt crzur. I would highly recommend it to anyone.

By jo on March 24, 2015

29

found this helpful.

Typical Fosgate

I've been a fan of Rockford fosgate since I was a teenager " I'm 43" always the best bang for the buck. This 300x4 amps birth sheet said 426. Its push 4 infinity 6x9's and and pair of infinity 3.5's with ease. Love Fosgate power

By joel on August 10, 2020 Checkmark Icon Verified purchase

23

found this helpful.

Really great amp

This amp 300 X 4 is great! I using it with 4 6X9 RF prime speakers and two 10" prime RF subs and is giving me a lot of power!! And is not expensive!!

By ricardo on March 31, 2016 Checkmark Icon Verified purchase

23

found this helpful.

Fosgate 4 channel amp

Plenty of power to run your system & extremely easy to set up I use it powering Polk db5252 components in the front & Polk db692 in the rear ran through a Kenwood X-599 deck & I have a Rockford 12" punch series sub in the trunk (not ran through this amp) & it really brings the musical experience to life

By BILL on December 17, 2016

22

found this helpful.

Good stuff!

This item did exactly what it should. Great value. I would definitely recommend!!

By Anonymous on August 3, 2018 Checkmark Icon Verified purchase

20

found this helpful.

Rockford Fosgate Prime R300X4

This amp powers my 4 speakers and does it well. Great sound and plenty of volume .

Filters, gain and other system controls are simple to adjus and make it easy to adjust to your speakers potential. .

Very satisfied with the whole system from Sonicelectronix

By Anonymous on June 10, 2018

20

found this helpful.

Awesome bang for the price!!!

I've had this amp for about a month now, no problems it makes my Silverado sound great!! Easy to install plenty of power for the money. Would recommend this amp to anyone looking to upgrade their system!

By Rob on December 29, 2015

20

found this helpful.

Great product!

orks great and makes my mids and highs sound great rockford never dissapoints!

By Osbaldo on January 17, 2018 Checkmark Icon Verified purchase

19

found this helpful.

Add-ons


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