Garage
Shop

Customer Ratings & Reviews


Rockford Fosgate PRIME R300-4 + Amplifier Kit thumbnail image
View product page

5 star
82%
4 star
18%
3 star
0%
2 star
0%
1 star
0%



Durability
4.9
Value
4.9
Features
4.6
Design
4.7
Usability
4.9

Customer Reviews

Sort by:

Loading...

wow

The following review is for R300-4, which is a part of the bundle you are viewing.

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!

By jr on September 19, 2012

26 found this helpful


GOOD AMP

The following review is for R300-4, which is a part of the bundle you are viewing.

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.

By John on December 23, 2010

26 found this helpful


r300.4

The following review is for R300-4, which is a part of the bundle you are viewing.

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.

By Maxwell on June 10, 2010

27 found this helpful


Rockford amp R300-4

The following review is for R300-4, which is a part of the bundle you are viewing.

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.

By Martin on September 17, 2013

24 found this helpful


good amp but not a thumper

The following review is for R300-4, which is a part of the bundle you are viewing.

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

By itsmedamnit on July 12, 2011

25 found this helpful


rockford fosgate prime speaker

The following review is for R300-4, which is a part of the bundle you are viewing.

like the speaker

By bob on November 23, 2010

26 found this helpful


Awsome amp!

The following review is for R300-4, which is a part of the bundle you are viewing.

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!

By B. J. on August 22, 2010

25 found this helpful


Great buy.

The following review is for R300-4, which is a part of the bundle you are viewing.

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!

By Mike on December 26, 2010

24 found this helpful


great product

The following review is for R300-4, which is a part of the bundle you are viewing.

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

By Brandon on February 9, 2010

24 found this helpful


amazing!

The following review is for R300-4, which is a part of the bundle you are viewing.

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!

By mark on January 8, 2014

23 found this helpful


Good Kit!

The following review is for 05PK8, which is a part of the bundle you are viewing.

This neat little kit is perfect for any amp you buy. (8 gauge anyway). Its kicker, you get what you pay for, even though for them, this kit is cheap :D!

In the good way.


You will never be disappointed by kicker. I haven't.

By Eric on July 11, 2008

17 found this helpful


kicker wire

The following review is for 05PK8, which is a part of the bundle you are viewing.

Very good kit! Wire is high quality. I really like the flexibility of the wire. I would get this if you are looking for a good 8 gauge wire. It has a strand count higher then many cheap 4 gauge I have seen.

By cody on July 12, 2007

12 found this helpful


Nice stuff

The following review is for 05PK8, which is a part of the bundle you are viewing.

Kicker makes a good product and this definitely doesnt fall short! Great wire. So flexible. Cool fuse holder. Awesome kit. THe only thing it needs is some nice rca's THe kit doesnt come with any.

By zach on August 14, 2008

10 found this helpful


excellent replacement for factory amp

The following review is for 05PK8, which is a part of the bundle you are viewing.

This amp performs great in my set up which includes polk door speakers and a basslink. The high pass keeps super low frequencies out of the smaller speakers yet the polks remain superbly punchy! A great amp! Its been in for about 3-4 months now and no problems.

By jj on February 8, 2010

10 found this helpful


Great Quality

The following review is for X204-17, which is a part of the bundle you are viewing.

This is a really a nice set of RCA wires, one of the nicest sets i have ever bought, i would reccommened, thank you Sonic.

By Carlos on December 13, 2011

7 found this helpful


Will continue to buy from Sonic!

The following review is for R300-4, which is a part of the bundle you are viewing.

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

By Dwayne on January 4, 2013

7 found this helpful


The Kicker PK kits are the best hands down!

The following review is for 05PK8, which is a part of the bundle you are viewing.

The quality of each of the piece(s) included in this kit is rock solid. I absolutely love the hyper-flex power/ground wires. I've used the Kicker PK4 4ga, PK8 8ga and PKD1 1/0 kits. Once you go hyper-flex you won't look back. The PK kits are better than any of the Phoenix Gold, Streetwires, Tsunami, or Scosche kits I have used in the past.

By CD on March 26, 2011

8 found this helpful


Great Deal!!!

The following review is for R300-4, which is a part of the bundle you are viewing.

This was a great product for a really great price.

By brianp404 on October 15, 2010

8 found this helpful


prime!!1

The following review is for R300-4, which is a part of the bundle you are viewing.

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

By Carson on July 15, 2015 Checkmark Icon Verified purchase

6 found this helpful


Great amp

The following review is for R300-4, which is a part of the bundle you are viewing.

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.

By AJ on February 7, 2014

7 found this helpful


Clean Straight up sound

The following review is for R300-4, which is a part of the bundle you are viewing.

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.

By RYAN on February 17, 2012

6 found this helpful


Good for the Price

The following review is for X204-17, which is a part of the bundle you are viewing.

For the price, the cable as no serious flaws. This is a cheap cable for a cheap price. It has better construction than other run of the mill cables and not as good as big names like Monster. The purpose of a cable is to deliver the music signal cleanly to the amp without noise from the vehicle, it does that. However, I had to pinch in the ground lugs to maintain a tight connection, no big deal but like I said not the quality of a Monster cable OR the price of a Monster cable.

By Thomas on December 6, 2010

6 found this helpful


Kicker means Quality

The following review is for 05PK8, which is a part of the bundle you are viewing.

This Kicker amp kit is really a great product! For those who consider giving their amp it's best, here you have it!!!

By Capp on September 29, 2009

6 found this helpful


Bleeding ears

The following review is for 05PK8, which is a part of the bundle you are viewing.

Kickers are known for being loud and durable. This product is no exception.

By Rico on December 23, 2008

6 found this helpful


Excellent product from a superb online retailer!

The following review is for 05PK8, which is a part of the bundle you are viewing.

I recently purchased this kicker wiring kit to go along with the amp I purchased. The install was flawless, and all wires where plenty long enough. The quality of the components was excellent as where the instructions. Sonicelectronix had a great price and super fast shipping. I highly recommend kicker products and sonicelectronix to anyone looking for car audio gear!

By Matt on December 18, 2008

8 found this helpful


Rf

The following review is for R300-4, which is a part of the bundle you are viewing.

I have this bridged to two channels and it's running a pair of 6.5 component type r speakers to complete my 3 speaker system I got a 12 in type x, you'd need an expensive set up to beat the quality and power of this underrated amp, I completely recommend this even tho everything else in my car is alpine you cannot ignore how much amp you get for ur money

By Eduardo on October 11, 2013

5 found this helpful


Great Amp, Great Price == Awesome performance

The following review is for R300-4, which is a part of the bundle you are viewing.

I would highly recommend this amplifier for anyone who wants tight, responsive bass. Make sure you have good subwoofers as this amp packs a punch! I would buy this over and over again!

By Salvador on September 17, 2013

5 found this helpful


Excellent Product

The following review is for R300-4, which is a part of the bundle you are viewing.

I have had several Rockford Fosgate products in the past. My last Rockford amplifier lasted 14 years. I have purchased many of their items from amps to speakers to head units. Very reliable product. I will continue to purchase Rockford products as well as recommend them to others.

By mofosta on January 26, 2012

5 found this helpful


rockford 4 channel

The following review is for R300-4, which is a part of the bundle you are viewing.

The rockford prime 300 is a good amp... Better than stock. I have this thing hooked up to 4 5.25 speakers and 2 3.5 speakers. I thought my car was not loud until I stepped inside my cousins grand prix. My system WAY louder and clearer. I would recommend this to a friend, because I get headaches just off vocals. The only con is that my speakers don't handle bass good enough(but that's whats subs are for). Love the way I can change db's by the flip of a switch.

By James on December 17, 2011

5 found this helpful


Just what I wanted

The following review is for R300-4, which is a part of the bundle you are viewing.

Loud and clear just like the company claims.

By daniel on August 21, 2011

5 found this helpful


Took care of everything, easy to set up and sounds great.

The following review is for R300-4, which is a part of the bundle you are viewing.

Cheap, simple to set up. Works excellently. It is a little large but still well concealed under the passenger seat of my '04 Camry and never ever has any heat issues (probably owing to the size). Hook it up for a full front stage sound system with subs and forget it exists. Just what I wanted. Also, I don't see the lack of crossover flexibility as a real negative. Most amps give you enough rope to hang yourself. This really has enough to cover what one would need in 99% of cases for 99% of the public.

By Tim J. on October 23, 2010

5 found this helpful


Solid Amp

The following review is for R300-4, which is a part of the bundle you are viewing.

Solid amp at a low price.. Only powering some Alpine Type R coax's right now.. hopefully soon ill bridge it on some nice components.

By Mikey on March 31, 2010

6 found this helpful


Great Sound!

The following review is for R300-4, which is a part of the bundle you are viewing.

I'd highly recommend these speakers. I have them in the back of my Trooper powered from a 300W Rockford amp and they are amazing!!

By Lachlan on June 25, 2013

4 found this helpful


great amp for your buck!

The following review is for R300-4, which is a part of the bundle you are viewing.

I'm basically a rookie in the car audio game workin for a shop with over 20 years in the game and me only 5 . but lemme just say i know my audio and i know how to make it last. but this amp is great by far better than anything else in this price range you cant go wrong unless your not hooked up properly the end great buy, but im ready for more power for my db drive mids and highs got over 18 speakers hooked up off two of these you can hear me way before you see me

By c_ooper on August 18, 2012

5 found this helpful


Rockford Fosgate still great

The following review is for R300-4, which is a part of the bundle you are viewing.

I am using this amp to power my pillar tweeters and dash 4" speakers. It works great and I like the fact that it has fine tuning controls on the AMP itself.

By Leo on November 7, 2011

5 found this helpful


Killer Value

The following review is for R300-4, which is a part of the bundle you are viewing.

Definitely a Rockford Rosgate amp, loud and clear. The lower end Fosgate amps would compare to other brand's high end amps. And just like all RF amps, this one is way underrated. My birth sheet shows 386 watts RMS, and the amp is rated for 300. Highly recommended!

By Jason on May 24, 2011

4 found this helpful


wow

The following review is for R300-4, which is a part of the bundle you are viewing.

Wow I bought this amp to go with my other Rockford Prime speakers and it can easily over power and distort the 6x9"s and 6 1/2"s I may need to upgrade the speakers again.

By cam on May 1, 2011

4 found this helpful


quality

The following review is for X204-17, which is a part of the bundle you are viewing.

i replaced my cheapo rcas with this for my 4 channel eclipse amp. have the front 2 channels running a pioneer component set and the rear 2 channels bridged running a pioneer champion series pro 12. i listened to my system befor i hooked these RCA's up and after. i can def say i noticed a huge diffrence in sound quality. even better imaging from my component set. these are very well worth the bucks sonic is asking. for being a cheaper pair of RCA's i love them. and ill keep on using them too! stop reading and buy them!!

By kenny on November 3, 2010

4 found this helpful


good value good product

The following review is for R300-4, which is a part of the bundle you are viewing.

this product has worked perfectly from the moment i plugged it in! I am considering buying a new amp from u.

By Michael on October 24, 2010

5 found this helpful


Great Value!

The following review is for R300-4, which is a part of the bundle you are viewing.

Really like it because of its features, power output and the overall quality it offers in terms of built and how it makes the speakers connected to it, have a well balanced sound between low, mid and highs. Long term durability wouldn't be able to give a rating because I only had it for a few months, though I wouldn't be concerned about it and I would recommend it. I have connected 4 JBL speakers.
Also at this price, performance and quality I had a hard time finding something similar

By Andrei on September 17, 2013

3 found this helpful


Great RF Quality!

The following review is for R300-4, which is a part of the bundle you are viewing.

To start my new system I needed a decent 4 channel amp at a low price. This amp is great! Basic functions but the sound quality makes any set of speakers sound amazing. Definitely recommend to anyone looking for quality on a budget.

By Stephen on July 3, 2012

3 found this helpful


Great amp for the price great quality

The following review is for R300-4, which is a part of the bundle you are viewing.

Pros- powerful, clear, adjustable for 4 speakers or 2 speakers and a sub. This amp over powers my kenwood speakers and makes them sound crystal clear all my friends are jealous of my vocals and think i payed over 200. Fast shipping from Sonic and the price is awesome.

Cons- really long amp for my lil car thats it

By SD's Finest on December 22, 2011

4 found this helpful


good amp

The following review is for R300-4, which is a part of the bundle you are viewing.

I bought this amp and put it on a pair of infiniti 6x9 and is sounds amazing. Good amplifier for the price.

By lil porn on November 13, 2011

3 found this helpful


Very nice quality

The following review is for X204-17, which is a part of the bundle you are viewing.

These RCA's are BEEFY. They look great and save you the trouble of running an extra set if your connecting a 4 channel amp. Very nice design and very clean looking. I would definitely use these again.

By Bill on March 26, 2010

3 found this helpful


Powers the entire system

The following review is for R300-4, which is a part of the bundle you are viewing.

I wrestled for sometime on which amp to go with as I was extremely limited on space, so I went with the fosgate 300-4. Im running a pioneer head unit, cadence 7v line driver as far as high end speakers I choose a pair of kicker 6.5's for the doors and kicker 6x9's for the rear and went with a kicker c124 sub. I am absolutely amazed by the bass and how clear the high end is. If you were in doubt about running "only 150 watts" to your sub(s) have no fear, this amp does a fantastic job. For the money you'll not find better.

By JB on April 14, 2012

3 found this helpful


Good Value

The following review is for X204-17, which is a part of the bundle you are viewing.

They look a lot better than the cheaper brands and it seems to work fine with me no problems with them. They seem to be a well made product not like the cheap 1s.

By richard on October 27, 2011

2 found this helpful


Very convenient and great quality!

The following review is for X204-17, which is a part of the bundle you are viewing.

The Tsunami brand RCA's are a great value for the quality you get and having a 4 channel RCA in a single length of cable makes install easier, cleaner and less likely to be interfered with. I've now used them in two different installs and will again. I've used much more expensive RCA's before, but haven't found any that are this good at this price.

By Bill on August 17, 2010

2 found this helpful


The following review is for R300-4, which is a part of the bundle you are viewing.
By Tyson on September 9, 2024 Checkmark Icon Verified purchase


Good 4 ch. wire

The following review is for X204-17, which is a part of the bundle you are viewing.

Bought this for long runs to amp from HU. Got quality and good connectors. Didn't get any alternator whine or cross talk. It worked real well for 4 ch. amp install.

By Michael on January 4, 2012

1 found this helpful


A good setup for a 4 channel amp

The following review is for X204-17, which is a part of the bundle you are viewing.

I used this for my 4 channel amp, and I don't regret it. Easy to run the cable around in the car, the connectors have a nice sturdy feel to them, and it looks nice without being to "blingy". Sounds good, no noise.

By David on November 3, 2011

1 found this helpful


nice interconnect

The following review is for X204-17, which is a part of the bundle you are viewing.

The bundle of all four cables made routing a breeze to my 4ch amp. The jacket had a nice tacky feel, easy to manipulate. Sounds as great as any TWP interconnect.

By Russell on December 8, 2010

2 found this helpful


Save up to 10 different vehicles in your garage
Vehicle
Store
Delete

1981 Cadillac DeVille

2011 Mazda 6

2012 Chrysler 300

2008 Lexus GX470

1982 Ford Escort

2017 Subaru Outback

2004 Ford Thunderbird

2012 Ford Edge

2011 Scion xD

2007 Buick Rendezvous

Add vehicle Clear all vehicles
Where to find vehicle info
Are you sure you want to clear your garage?
This action cannot be undone. Confirm
This page was not designed for products.
If you continue, you will be redirected to a category customized for your vehicle. Continue
Loading...
Identify your vehicle and submodel details
  • Owner's manual
  • Vehicle's insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver's side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon

Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.