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Our take on the Rockford Fosgate Prime R250X1

Rockford Fosgate performance in a small package. The Prime Series R250X1 mono amp can drive a sub with up to 250 watts RMS, so you can really feel your bass rockin'. You can use the low-pass filter and Rockford Fosgate's famous Punch boost to get the best possible bass from the sub and enclosure in your vehicle. A phase switch gets your subs firing along with your other speakers for maximum impact, while the speaker-level inputs let you hook this amp up to almost any system, even a factory stereo.

Rockford Fosgate power for your sub

Rockford Fosgate performance in a small package. The Prime Series R250X1 mono amp can drive a sub with up to 250 watts RMS, so you can really feel your bass rockin'. You can use the low-pass filter and Rockford Fosgate's famous Punch boost to get the best possible bass from the sub and enclosure in your vehicle. A phase switch gets your subs firing along with your other speakers for maximum impact, while the speaker-level inputs let you hook this amp up to almost any system, even a factory stereo.

Rugged performance and value

The R250X1's heavy cast-aluminum chassis efficiently draws damaging heat away from its internal components, ensuring reliable, long-term play. The amp's built-in sensors keep track of the output current and power supply temperature, ensuring that plunging subwoofer impedances (they change constantly during play) or even a short circuit won't hurt anything. The included wired remote lets you control the amp's volume level from the front seat. Your driver's seat will become your favorite place for listening once this Prime amp goes to work.

Putting together a bass system with this amp? Check out this Crutchfield-approved amp/sub package.

Confused about impedance? Check out our article on matching subs and amps.

Product Highlights:

  • mono subwoofer amplifier
  • 150 watts RMS x 1 at 4 ohms (250 watts RMS x 1 at 2 ohms)
  • CEA-2006 compliant
  • variable low-pass filter (50-250 Hz, 12 dB/octave)
  • variable bass boost (0-12 dB at 45 Hz)
  • phase switch
  • wired remote Punch Level Control included
  • Class AB amplifier design
  • frequency response: 20-250 Hz
  • MOSFET power supply
  • preamp and speaker-level inputs
  • preamp outputs
  • 8-gauge power and ground leads and a 30-amp fuse recommended — wiring and hardware not included with amplifier
  • no on-board fuses — when installing multiple amps in a system, an additional 30-amp in-line fuse between the distribution block and this amplifier is recommended
  • 11-1/4"W x 2"H x 7-3/8"D
  • warranty: 1 year
  • Our 60-day money-back guarantee

Great amp for the price. Just what I needed to run two 6 inch factory BMW subs.

Brian, Decatur, AL

What's in the Box:

  • Mono subwoofer amplifier
  • Remote Punch Level Control module
  • 18' Remote Punch Level Control cable (RJ-25 connector on both ends)
  • 6" Speaker level input harness
  • 3mm Allen wrench
  • Four 3/4" Self-tapping screws
  • Two 1/2" Self-tapping screws
  • 4 Flat washers
  • Installation & Operation manual (English/ French/ Spanish/ German/ Italian)
  • Amplifier verification certificate

Rockford Fosgate Prime R250X1 Reviews

Average Customer Review(s):

(24 Reviews)

Rockford Fosgate Prime R250X1

Brian from Decatur, AL on 5/14/2017

Crutchfield Customer Review (What's this?)

Great amp for the price. Just what I needed to run two 6 inch factory BMW subs.

Pros: Inexpensive. Good bump for the price. Easy to install.

Cons: Would be great if it came with a paper template for drilling mounting holes. Had to make one.

Affordable and Powerful

Billie from Murfreesboro, TN on 3/20/2017

Crutchfield Customer Review (What's this?)

perfect match for my Rockford Fosgate R2D4-10 that i purchased with it. sounds great and no let up. even comes with a certificate from when they tested it and puts out more RMS than advertised!

Pros: easy set up, great push without breaking the bank

Cons: none so far.

Rockford Fosgate Prime R250X1

Anonymous from Cape Girardeau, MO on 3/13/2017

Crutchfield Customer Review (What's this?)

Very good mid-level amplifier. Performs very well at this price level. Nice form factor with easy to access terminals. My only complaint is kind of silly and OCD. The pots for the gains and cross-over levels were not flush with the amp case. Other than that minor criticism, I'm very pleased.



Rockford Fosgate Prime R250X1

Anonymous from Marion, VA on 2/14/2017

Crutchfield Customer Review (What's this?)

Very nice amp for the subwoofer I upgraded in my Jeep Wrangler. I like the line level inputs and adjustments on the amp to get the fill the bottom end where my factory subwoofer was lacking



Great Product

Patrick from Camarillo, CA on 1/22/2017

Crutchfield Customer Review (What's this?)

Great product, performs exactly as I expect a Fosgate product to. Easy setup and install, powers my setup nicely.

Pros: Easy setup, nice controls

Cons: N/A

Awesome sound and highly configurable to dial it right in for your sub

Adam from Manchester, NH on 1/13/2017

Crutchfield Customer Review (What's this?)

Excellent product. Installation in my son's regular cab truck was painless and the installation manuals were spot on and easy to follow. The sound is awesome! Quite a bit of punch in that small space and ultimately configurable with the built in controls to tune in the perfect sound.



Rockford Fosgate Prime R250X1

Anonymous from Gallup, NM on 12/6/2016

Crutchfield Customer Review (What's this?)

nice output but expected a little more output from reading all reviews from people that purchased. Guessing still need to adjust the settings for better results.



Pretty sweet amp

Jay from Fernandina Beach, FL on 10/25/2016

Crutchfield Customer Review (What's this?)

Definitely impressed with this amp for the price. Powering a 40TCWS102 Kicker with it. Not earth shattering but a nice fill sub setup for a pickup truck. Had an issue with the remote punch level control but Shawn at Crutchfield was quick to take care of it. Great service ????

Pros: Cost Sound Power


Rockford Fosgate Prime R250X1

Tim from Richland, WA on 9/11/2016

Crutchfield Customer Review (What's this?)

Lots of power and. Good controls

Pros: Power controls


Great amps been rocking Fosgate for twenty years great amps

Darrell from Texas on 7/24/2016

Crutchfield Customer Review (What's this?)

Old school rocker Fosgate in my eyes the best sub amps

Pros: Neverhad one burn up tough amp Rockford Fosgate the best

Cons: Alsom sound and a lot ot of it lol

Added the punch my system was lacking.

Albino from Dallas on 7/11/2016

Crutchfield Customer Review (What's this?)

A great amp and price for my subwoofer.

Pros: Easy installation

Cons: None


Anonymous from Portland, Oregon on 6/29/2016

Crutchfield Customer Review (What's this?)

Opened, installed and up and bumping in no time. Performed up to expectation.

Pros: Easy install, performs as expected.

Cons: None

Sweet Amp

Jacob from Bellingham, WA on 5/31/2016

Crutchfield Customer Review (What's this?)

Great amp for a great price! Doesn't radiate a lot of heat, just a bit warm after a lot of use.

Pros: Easy installation, looks clean

Cons: None

Great Amp!

Chris from Newton, MA on 5/20/2016

Crutchfield Customer Review (What's this?)

I used this amp to power an 8" bazooka tube. The thing sounds great! The crossover adjustments are easy to use and installation was just as easy. I like the remote bass boost knob too!

Pros: Easy to install and tune.


Works Great for Me

Paul from Chesapeake, VA on 1/24/2016

Crutchfield Customer Review (What's this?)

I bought this amp to drive the factory sub in my Honda Ridgeline when upgrading the factory head unit to a new one. That being said, I didn't need much by way of power, but I also wanted something good quality, since I had to tear about the entire back end of my truck's cab to put it in. (The factory sub is inaccessible without removing the rear seat - bolts and all.) Nice touch adding the remote control for the bass level - especially considering the fact that once I put the seat back I don't have access to adjust it.

Pros: - Good quality (sound and build) - Remote level control

Cons: - No Complaints

Fantastic Amp

Joe C from Maryland on 1/10/2016

Crutchfield Customer Review (What's this?)

One of the best amps around. The service was great by Crutchfield. They suggested this amp and it is the perfect set up.



Great Product

Anonymous from Arizona on 9/6/2015

Crutchfield Customer Review (What's this?)

Great product. Provides great power to my sound system. Items were delivered on time.



Great amp

Trevor from Minnesota on 5/31/2015

Crutchfield Customer Review (What's this?)

Great amp, powering a 12" audiobahn, love the remote bass punch it comes with for fine tuning without going to the trunk. Has plenty of power for my ears.

Pros: Remote with plenty of cord for fine tuning the bass punch, plenty of power for such a small amp

Cons: Haven't found any cons yet


Ag from Charlottesville va on 4/30/2015

Big performance from a little guy

Pros: Plenty of adjustments for fine tunning


Rockford Fosgate Prime R250X1

Dave from Oregon on 2/19/2015

Crutchfield Customer Review (What's this?)

Great amp for the price and easy to install

Pros: Sounds great, easy to install and it won't break your bank.



Zack from Merced California on 1/25/2014

Crutchfield Customer Review (What's this?)

Very easy to attach to your vehicle, not cheaply made either!!! Hook up to your system couldn't be easier. Simple to adjust and tune once it's connected!

Pros: Small compact size, inexpensive, easy to fine tune, connecting to your system was simple!

Cons: Not much to complain about, you get exactly what you pay for.

Not bad for the size

PillzNY from Bronx, NY on 7/14/2013

Crutchfield Customer Review (What's this?)

Provides just the right amount of power to the sub I purchased

Pros: Size isn't big at all. After the right adjustments, sounds great

Cons: Honestly can't think if any.

very nice amp

brad from raymore, mo. on 7/13/2013

Crutchfield Customer Review (What's this?)

This is my first install of any amp. I think I choose wisely! If I had the extra money, I woulda went 4ohm mono at 250rms or more, but that gets expensive. Running at 2 ohms loud, it starts to get hot sooner than later. But good bang for the dollar! Highly recommended.

Pros: Nice and small, Allen wrench on every terminal! Loved that. Made it easier for me. No matter how ya mount it, easy access to adjustments.

Cons: Not one.

Lots of juice!

Jorge from Burleson, TX on 5/14/2013

I've never have a small amp that said that it was 250 watts actually do it. I tested this amp and it was putting out 345 watts. I've got it running a single Rockford Fosgate P1 10inch sub in a ported box and it gets loud. I've had others ask me if its 2 12 inch subs.

Pros: Puts out more power than stated, very compact size, easy installation, looks good

Cons: None that I can think of


Hands-on research

Product Research



CEA 2006 Compliant: The R250X1's power ratings and signal to noise ratio are measured according to the uniform standards advocated by the Consumer Electronics Association (CEA). This allows you to accurately compare these specifications for all CEA 2006-compliant amplifiers, even from different brands. Manufacturers who adhere to these standards can display the CEA 2006 logo on their products and packaging. CEA2006 Specifications for this amplifier are:

  • 4 Ohms: 150 watts RMS x 1 at 4 ohms, 14.4 volts, and less than 1% THD+N
  • 2 Ohms: 250 watts RMS x 1 at 2 ohms, 14.4 volts, and less than 1% THD+N
  • S/N: 80 dB, measured at 1 watt output (100 dB measured at rated power)

LED Indicator: The amplifier is equipped with an LED power/protect indicator. The LED illuminates blue when the unit is turned on. It illuminates red if the thermal or short circuit protection circuit is engaged, and the amplifier will automatically turn off.

Mounting: The amplifier can be mounted vertically or horizontally using the supplied mounting screws. The amplifier should never be mounted in an engine compartment as this will void the warranty.


Gain Control: Use the amplifier's gain control to match the output of the source unit. The rotary gain control is labeled 1 to 11 and has a sensitivity range of 150mV to 4V when using a preamp level signal, 450mV to 12V when using a speaker level signal.

Remote Punch Level Control: The R250X1 includes a wired Remote Punch Level Control, linked to the gain control of the amplifier. The module allows you to remotely control the output level of the amplifier from the dash or center console. The Remote Punch Level Control features a rotary dial, and comes with mounting hardware and an 18' cable.

Note: The Remote Punch Level Control measures approximately 1-3/4" wide (2-5/8" including the mounting flange) x 3/4" high x 1-5/8" deep (2-1/8" deep including the knob and wiring).

Crossover: The amplifier is equipped with a 12dB/octave Butterworth low-pass crossover. The crossover point is continuously variable from 50 to 250 Hz. This being a subwoofer amp, the crossover is always engaged.

Phase: The 2-position phase switch allows you to easily reverse the output phase of the amplifier, choose 0° or 180° to match the rest of your vehicle's speaker system.

Punch EQ: The Punch EQ bass boost circuit is adjustable from 0 (min) to +12dB (max) and centered at 45Hz.


Power Terminals: The power and ground terminals are nickel-plated set screw terminals and will accommodate up to 4 gauge power and ground wires.

Fuse: An external 30-amp fuse (not included) must be installed on the power wire at the battery. If a wiring kit is used which includes a fuse with a value other than 30-amps, the original should be replaced with a 30-amp fuse.

Remote Turn-On Terminal: The remote turn-on terminal is a nickel-plated set screw terminal that will accommodate up to an 8 AWG wire. It's used to remotely turn the amplifier on and off.

Speaker Terminals: The one pair of speaker outputs is nickel-plated set screw terminals what will accommodate up to 8 AWG speaker wire.

RCA Input Jacks: The industry standard RCA jacks provide an easy connection for preamp level input. They are nickel-plated to resist signal degradation caused by corrosion.

Speaker Level Input: A speaker level input harness is included, making it easier to add the amplifier to a factory radio or to a receiver with no preamp outputs.

RCA Output Jacks: A pair of RCA pass-thru jacks provides a convenient source for daisy-chaining an additional amplifier without running an extra set of RCA cables from the front of your vehicle to the amplifier location.

Wired Remote: An RJ-25 jack is used with the included Remote Punch Level Control.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Bought RF Prime speakers and an RF sub, got the amp to match the system. Good price too. Full 9 speaker upgrade with amp only cost $350. Got a quote from an install shop for close to $1200 for similar build. Do it yourself and get better quality at a fraction of the cost.[ Dylan  Sep 15, 2017 ]
features and power for the price.[ MICHAEL  Aug 22, 2017 ]
Fosgate has great amplifiers plus this is mono and can go to 2 ohms and has remote wired bass boost.[ alfred  Jul 22, 2017 ]
I've always been a huge fan of Rockford Fosgate amps so hopefully this amp will hold up to its reviews.[ Peter  Jul 03, 2017 ]
Name brand repartition and price.[ Daniel  Apr 27, 2017 ]
Heard it was good amp[ Antonio  Mar 08, 2017 ]
Best choice for the speaker / enclosure that I ordered[ Jeffrey  Feb 04, 2017 ]
Recommended for my car[ D  Jan 02, 2017 ]
Paired with Sub nicely and I like the configuration options.[ Adam  Dec 13, 2016 ]
Features meet needs[ Brett  Dec 11, 2016 ]
Wanted an amp with a volume control remote since I can't listen to all different types of music with one volume setting.[ Nicholas  Oct 08, 2016 ]
Replacing a failing RF punch 301M[ JASON M  Sep 15, 2016 ]
Good match for the sub I purchased.[ Willie  Jul 16, 2016 ]
Fits my specific need.[ Albino  Jun 28, 2016 ]
Because it's Rockford[ Eric C.  Jun 04, 2016 ]
Good price for an amp from an established brand.[ Miguel  May 19, 2016 ]
Awesome power for dollar amount![ Tim  May 08, 2016 ]
it was recomended[ Charles  Mar 31, 2016 ]
Seems to be a good choice for the Rockford Fosgate R2S-1X10. We currently have 4 other Fosgate amps in different vehicles that have performed well.[ GARY  Mar 26, 2016 ]
Small size, plenty of power.[ Curtis  Jan 29, 2016 ]

7 questions already asked

this amp only turns on with +12v supplied to the remote power terminal.[ MARK E  Apr 11, 2017 ]
No it needs a remote power input to turn on.[ Jeremy  Apr 10, 2017 ]
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer. You can also post your question in our forums: Or try our online support center: [ Krissy  Jan 27, 2017 ]  Staff
Thanks for your question. For information on selecting the best amp for your subs I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences between the amp models and help you make the best choice for your system.[ Kenny  Oct 12, 2016 ]  Staff
Thanks for your question. For information on selecting the best amp for your subs I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences between the amp models and help you make the best choice for your system.[ Krissy  May 05, 2015 ]  Staff
4 gauge is also necessary unless, you want to blow fuses in the line or heat up the wire.[ John  Dec 03, 2014 ]
Yes. I used Sky High 4 gauge OFC and it fit perfectly.[ John  Dec 03, 2014 ]
Yes. I believe larger than 8 guage wiring is required. $ guage would be overkill, but fine technically. You may have trouble fitting it into the ports but they probably have ends that can be crimped on. I am pleased with the output though. Good amp, especially for the price.[ STEVEN  Dec 03, 2014 ]
I wouldn't recommend it it will heat up if you like volume.[ JARED  Dec 03, 2014 ]
I forwarded your question to an Advisor and they responded with the following: It would not be recommended to use a 10 gauge. The amp calls for an 8 gauge as the minimum size.If you would like to discuss further you can contact an Advisor directly by phone (1-800-324-9695) or online chat.[ Krissy  Aug 06, 2014 ]  Staff