Rockford amp
Michael from Grove City, OH on 4/11/2025
1979 Chevrolet Camaro
Great amp. I like a company that underestimates the power then a company that overestimates the power. Wouldn't get any other brand
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0 of 0 found this helpful
Replaced 30 year old Rockford amp.
Chad from PORT MATILDA, PA on 1/15/2024
1976 Pontiac Firebird
I replaced a Punch 4080DSM with this amp and could not tell any difference which is a huge compliment to this new Rockford amp. I love my 4080DSM but had to send it out for capacitor replacement, 30 years old got my monies worth. This Punch P400X4 fit in the same location as my old amp and sounds amazing.
Pros: Price, build quality, sound quality.
Cons: The removable cover is nice but is a kind of a pain.
1 of 1 found this helpful
Punch It
Jeremy from LUVERNE, MN on 12/18/2023
1989 BMW 3 Series
Amazing amp. I have this one in my E30 BMW powering 4 Polk Audio 5.25" speakers. The sound is amazing and crisp and clear. As per usual, it's putting out way more power than advertised so I intentionally sized down from what the speakers were rated for at RMS. I was not disappointed. This replaced a Pioneer amp rated at almost the same power. Fact is that the Punch sounds like it's twice as powerful and definitely sounds better. The speakers came alive and sound incredible. The setup is a breeze and I actually have it tuned down a little. Great amp. Will not disappoint.
Pros: Quality, Power, Value
Cons:
1 of 1 found this helpful
Rockford Fossgate
Tim from Sunrise Beach, MO on 9/17/2023
It arrived when they said it would. It was an exact replacement and works great.
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0 of 1 found this helpful
Distortion Due To Quality
Jonathan from INDIALANTIC, FL on 7/26/2023
2015 Ford F-150 XLT
0 of 6 found this helpful
Rockford Fosgate Punch P400X4
Kulwinder from Sacramento, CA on 6/21/2022
2021 Toyota Tacoma
Great Amp, bought it to power my Focal 6x9, 6.5" and tweeters for my '21 Tacoma. Nice clean power, rated at 400W but tested to 557W. Compact design fits nicely behind rear seat. I would highly recommend Rockford Punch Amp.
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6 of 6 found this helpful
PUNCH ROCKS
Kevan from St Charles, MO on 5/22/2022
2009 Ford F-150 XLT
I have this in my 2009 f150 supercrew powering Punch 3-way 6x8 fronts and Punch 2-way 6x8 in the rear. This puts out everything I expected and then some! I can turn my JVC up to max volume WITHOUT any distortion!!
Pros: EVERYTHING
Cons: NOTHING
2 of 2 found this helpful
Rockford Fosgate Punch P400X4
steven from Ridgway, PA on 4/15/2022
1 of 1 found this helpful
Classic quality
James from Westminster, SC on 1/20/2022
It's great that Rockford Fosgate is still making such high quality underrated amps. I love this unit after a week of ownership. 83 RMS watts per channel at 4 ohms, and 139 at 2 ohms. That's 40% more power than the factory rating. The sound is crisp and clean and plenty loud. The only complaint I have is setting up the "Clean" power. The amp doesn't include the audio tracks you need on a CD, and you can't download it anywhere, you can only stream. I ended up setting my gains using a regular music CD and used the blue/purple lights as a reference for setting the gains. Love the way this unit looks and feels too. Heavy and high quality. You really can't go wrong with the RF Punch series.
Pros: Power Looks Quality
Cons: No "Clean" CD included
3 of 4 found this helpful
Rockford Fosgate Punch P400X4
Crutchfield customer from Arlington, WA on 12/2/2021
0 of 0 found this helpful
Old School Quality
Dave from Compton, Ca on 11/30/2021
This amp is awesome. Full disclosure, I used to work at a major retailer, that sold Car Audio and other electronics (service was state of the art there). I sold car audio and it was my hobby. I had to admire Rockford Fosgate from afar, because we didn't sell it. Finally, I got my first Fosgate amp, after being away from car audio for over 20 years. This was well worth the wait! I had it hooked up to the Memphis PRX690's and some rear speakers. I upgraded to the JBL Stadium 690s and the midrange for the 3 way set (even though Crutchfield said they wouldn't fit my 2018 Jeep Grand Cherokee). I have to say, the sound quality and the power that this amp delivers is amazing. Everything is balanced and ultra clean. This amp is on par with every old school SoundStream, MTX, and Sony amp that I have ever used. I listen to a wide range of music-jazz, hip-hop, r&b, grunge, country... The sound is clean and pure!The crossover and bass boost are great ,as well! WOW this amp rocks. I wouldn't hesitate to buy another one of these for my next project!
Pros: Power and Sound Quality
Cons: None
3 of 3 found this helpful
Great sound, excellent build quality.
John from CONROE, TX on 7/12/2021
2010 Ford Explorer
I upgraded from the prime r250x4 to drive my Kappa components. I could tell during the install that the punch series was worth the extra cost. Sound is great, setup was simple, and build quality is also excellent. Lastly, nothing on this planet is perfect but Crutchfield is pretty close, between the information on the website and chatting with knowledgeable people I was able to extensively research what I was looking for before making my purchase.
Pros: Underrated power, clipping lights and high quality switches, dials and terminals.
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5 of 5 found this helpful
Dance party in the cross walk
Crutchfield customer from San Diego, CA on 6/4/2021
I have this in my Jeep Wangler with 2x 6X9 and 1 10 inch base. Took the Jeep out. To Pacific Beach (California) and started 3 dance parties in the cross walks. This is the amp to have for clarity and power
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4 of 4 found this helpful
Matts 2003 Yukon
Matt from Pearlington MS on 5/10/2021
2003 GMC Yukon
The Punch P400X4 amplifier is A high Fidelity amp with more than enough power to really make your speakers perform to their best potential. I am using this amp with a JVC KD-T915BTS radio and four Rockford Fosgate Punch P1650 speakers. Real nice sounding system. Rockford Fosgate amps and the JVC front end are a perfect match they interface well with each other. You really do get a great sound out of this amp and only the best components should be used with a amp of this quality
Pros: Under rated power the birth certificate said this amp will push 84 watts RMS into 4 channels at 4 ohms. Drives speakers very well with Crisp clean sound. Highly recommended
Cons: None so far. Remember your stereo is only as good as your weakest components in the chain.
6 of 6 found this helpful
Great amp
Crutchfield customer from Point, TX on 4/23/2021
2018 Chevrolet Silverado 1500
Great amp. I have it running two infinity primus 6x9s and one Jl audio 8. Amp never over heats. Sounds pretty good for what I have. Thanks Crutchfield!!
Pros: Has everything you need to make your speakers sound their best
Cons: None
0 of 0 found this helpful
Nice amp , easy gain setting
Jarrod from Blackstone, MA on 4/5/2021
2019 Ford F-150 XLT
This is a nice semi small amp , made the focal icu speakers I installed in my truck really sound good . The gain set up is so easy it takes less the 2 min to set .
Pros: Easy way of setting gains
Cons: None buy with confidence
4 of 4 found this helpful
Rockford Fosgate Punch P400X4
Crutchfield customer from Mcleansville, NC on 3/9/2021
2004 Buick LeSabre
0 of 0 found this helpful
Tundra
jeremy from CONNELLSVILLE, PA on 1/30/2021
2018 Toyota Tundra
Installed in 2018 Tundra Crewmax. Blown away at the details I've been missing from factory system. I have punch 6x9 fronts ( they will fit with an additional 3/16 spacer that I made from acrylic) and punch 6 components rear powered by this amplifier they sound clear and tight. I plan on updating speakers (again) to some power fosgates components. It only takes about 2 hours for installation. You can not go wrong with Rockford Fosgate. I've bounced around with different speakers throughout my 49 years but always end up back to Rockford and IMO their amplifiers are some of the best on the market at this price point. The Crutchfield crew is the absolute best people in the market. Thanks
Pros: Everything
Cons: None
4 of 4 found this helpful
Matts 2003 Yukon
Crutchfield customer from Pearlington, MS on 1/17/2021
Have not hooked it up yet. The birth certificate say it will do 337 watts at 4 ohms that is 84.25 watts X 4 channels at 4 ohms. Rockford Fosgate is the choice if you want the best money can buy. The P400X4 amp should be considered as a awesome deal.
Pros: Way more power than you are paying for. Nice size and weight. Solid company that has been making car amps since the 70's
Cons: None so for
2 of 2 found this helpful
Solid Amp
Crutchfield customer from Mesa, AZ on 12/31/2020
2005 Nissan 350Z
Solis amp. Easy to set the gains.
Pros: Easy to set gains. Amperage is underrated. Powerful
Cons: None
1 of 1 found this helpful
Great amp, under-rated power for what it can actually do.
Daniel from Minnesota on 11/16/2020
2020 Toyota Camry
Great amp, Gets almost too loud for my car to balance full range with my sub amp. With the gain set to 2 V it completely overpowers my sub at optimal gains. Need to turn it down to 9v. Amp is rated at 50 W x4 at 4 ohms. The calibration sheet that comes with it says it's capable of 80w per channel... That's a lot of overhead.
Pros: Sounds good, able to get a lot of volume at low gain. clipping and distortion lights are spot on. (Checked with oscilloscope)
Cons: Punch EQ isn't the best. I wish it could boost bass without have to set crossover to LPF.
2 of 2 found this helpful
The missing link
Ty from Klamath Falls, OR on 10/25/2020
1967 Chevrolet El Camino
I recently purchased what I thought was an awesome system. Subwoofer, mono amp retro deck and front component speakers. All this for my custom 67 El Camino. After the install of all those listed above I was not hearing what I thought my system should be. HOWEVER, 2 weeks later I purchased this amp with some 6x9 speakers to put behind the seat, and WOW she came ALIVE. This amp was the missing link to the system I Imagine for my first installation. This Fosgate amp was an easy install if you are a person that has the ability to do DIY projects. This amp is user friendly, this amp is also needed to get crystal clear lyrics and live instrumentals that a deck alone will not provide. Now I have my amp installed in the 4 channel position and love the Hi fidelity sounds I'm getting without turn on the subwoofer at all. The subwoofer is the icing on the cake when I want to feel that I am on stage with the Musicians. My system includes Retro Long Beach 10"subwoofer 600watt Punch mono amp 500watt Fosgate front components Fosgate 6x9 rear speakers And the most important part of the System. This Fosgate 4 channel P400X4 amp. I would also like to thank JT at Crutchfield tech support for his knowledge , help & conversation with my project.
Pros: Makes the system sound the way it should.
Cons: Really not much. I would say the amp is a heavy unit and a nice size so it has to be mounted under the seat. But if you want American perfection then just deal with it ??
5 of 6 found this helpful
Rockford Fosgate Punch P400X4
Crutchfield customer from Barrigada, GU on 10/19/2020
2016 Honda Accord LX
Easy instructions, easy installation, and if any problems crutchfield will help you with any problems you might en counter.
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1 of 1 found this helpful
I mean it is still Rockford Fosgate.
Luke from BROOKELAND, TX on 9/25/2020
2001 Ford F-150
First stereo install in over 20 years and dad even used Rockford around the Flinstones times and all I can say is it is still Rockford Fosgate. Good amp easy easy to setup. Love the clipping program. Not sure why but maybe a break in period but adjusted after a month and was able to get substantially more power.
Pros: Rockford Fosgate
Cons: My dad even knows the name.
2 of 3 found this helpful
Rockford Fosgate Punch P400X4
Crutchfield customer from Mckinney, TX on 9/15/2020
2017 Toyota Tacoma
Plenty of power for Infinity KAPPA 90csx and KAPPA 62IX. I like how you don't need a remote wire to hook up to the amp. The amp gets warm, but not hot playing music with the volume at 50 percent of clipping.
Pros: Worth the money, plenty of power for 6x9 and 6.5 speakers.
Cons: Instructions needed for more info on how to calibrate the eq side, otherwise this amp fits perfect for Infinity KAPPA 90csx and KAPPA 62IX
1 of 1 found this helpful
Rockford for the win
Crutchfield customer from Honolulu, HI on 8/28/2020
2008 Nissan Frontier
Great looking amp, specs are outstanding, can't wait for my speakers to come in, so I can install it
Pros: Rockfords are always underrated, which means you get "free" wattage!
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0 of 1 found this helpful
Rockford Fosgate Punch P400X4
Crutchfield customer from Show Low, AZ on 6/26/2020
2015 Ford Focus
It's the best amps never gave me any problems
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1 of 1 found this helpful
Top notch sound
Crutchfield customer from Santa Rosa, CA on 6/13/2020
Amazing clarity. Extremely easy to gain match and set xovers with distortion light built in. It can run warm, which is expected with a class a/b amp. For my own peace of mind and because I like to crank my music,i built a temperature controlled amp rack with fans so they can keep the amp in an ideal temp for hours.
Pros: everything about it
Cons: can run warm
2 of 2 found this helpful
Brands I trust
Crutchfield customer from Bellflower, CA on 6/12/2020
1998 Honda Accord
After reading a review of a fellow Crutchfield shopper about how this amp really made a awesome difference for the interior speakers for Highs and mids I wanted to build my car sound system with the brands I grew up trusting And this fosgate 400 watts amp DOES THE JOB!!!!
Pros: So many ...... voice and highs are heard !!!!!
Cons: Can't think of anything
0 of 0 found this helpful
Rockford Fosgate Punch P400X4
Crutchfield customer from Oil City, PA on 6/9/2020
Was very easy to install and set up. Definitely an amp for people starting with audio.
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0 of 0 found this helpful
Rockford Fosgate Punch P400X4
Crutchfield customer from Frederiksted, VI on 6/1/2020
2009 Toyota Tacoma
So far so good. I received my item in good time. Package was completely sealed with all my instructions. Haven't installed as yet will do so soon.
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0 of 1 found this helpful
Rockford Fosgate Punch P400X4
Crutchfield customer from Pine City, MN on 5/31/2020
1997 Ford F-250 Light Duty
Fast delivery, awesome amp, wouldn't buy my equipment anywhere else, YOU GUYS AND GALS ROCK!, thankyou for the excellent service
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0 of 0 found this helpful
Awesome
Crutchfield customer from Winchester, VA on 5/25/2020
I love it. This is the heart of my all Rockford system
Pros: Clipping protection, clean look, great power
Cons: No built in fuse
0 of 0 found this helpful
Rockford Fosgate Punch P400X4
Crutchfield customer from La Quinta, CA on 5/23/2020
2010 Honda Accord
Opened the box and reviewed the product, but have not installed it yet. Looks great!
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0 of 1 found this helpful
Better than advertised. Typical Rockford Fosgate product!
Crutchfield customer from Foothill Ranch, CA on 5/19/2020
Very pleased with the continued sound quality and performance of Rockford Fosgate products since the late 80's. Plenty of power and crisp notes. 400w amp with a data sheet showing 549 watts. The way my set up is wired, I'm not using it to it's full potential but it's plenty loud enough to continue my hearing loss.
Pros: Easy top viewing of all controls and hook-ups.
Cons: None that I can find.
4 of 4 found this helpful
Rockford Fosgate Punch P400X4
Crutchfield customer from Vallejo, CA on 5/15/2020
2004 GMC Sierra 1500
Great amp at a great price. Also call a staff member with a question. You will be amazed with the great customer service. Thumbs up Crutchfield
Pros: Love my Fosgate Amps
Cons: None yet
0 of 0 found this helpful
Serious Boost In Performance
Crutchfield customer from Lake View, NY on 5/11/2020
2011 Chevrolet Cruze
This ampilfier can put some serious (much needed) quality of sound to your speakers; especially if you combine the product with the (Rockford Fosgate) P1675 & P1675S Speakers!
Pros: Adds high-quality sound and enhances your sound equalibriums in your vehicle to match your Perfect Style of Sound!
Cons: You have to go to the site and download the correct settings for your specific speakers and vehicle. You have to get out of the driver's seat, to access the EQ and other features on the amplifier.
2 of 2 found this helpful
Great amp!
Crutchfield customer from Florence, AL on 4/14/2020
2014 Ford F-150 Lariat
Well built and versatile amp have ran in 4 channel-4ohm and 2 channel-bridged@2ohm and performed equally well gets warm but had yet to clip out. Underrated wattage have to keep it turned down or will blow my triaxle fosgate 6x8s.
Pros: Versatile, well built.
Cons: Nitpicking but I think it's a little large.
1 of 2 found this helpful
Rockford Fosgate Punch P400X4
Crutchfield customer from Bradford, AR on 2/3/2020
Great amp for mids and highs, just needs pass Thur jacks for sub amp other than it's perfect.
Pros: Perfect for running mids and highs , easy to install and set up .
Cons: No pass Thurs for running other amps .
2 of 2 found this helpful
Rockford Fosgate Punch P400X4
Crutchfield customer from Molokai, HI on 1/7/2020
0 of 0 found this helpful
Great amp!
Cody from LOVELAND, CO on 10/20/2019
I like this amp. I also have it's cousin, the Rockford Fosgate Punch P300X1 mono amp powering my sub. This amp powers 4 JL Audio 6.5 coaxial speakers in each door of my 2006 GMC Sierra 2500hd crew cab Duramax. It works great, is tuneable, and I hope it will be just as reliable as its 2 year old cousin I just mentioned.
Pros: low profile to hide, tune-able, reliable brand
Cons: the way Rockford has you adjust the clipping is wonky. It had me stop at 9 volts, when my headunit puts out 5. It was so quiet I couldn't hear much out of the speakers. I cranked it up to 3 volts, and it is much better. Not sure what that issue was.
1 of 1 found this helpful
Rockford Fosgate Punch P400X4
Jency from Harvey, LA on 9/24/2019
More than I expected. This is just. What the dr. orderd. This amp powers my system effortlessly. I couldn't use the setup disc. I think this as something to do with my radio.
Pros: Everything
Cons: None
1 of 2 found this helpful
Rockford Fosgate Punch P400X4
Crutchfield customer from Haworth, OK on 7/20/2019
haven't had it for very long maybe a couple of weeks now and it seems to be doing a great job.one thing if you get the wiring kit from R/Fosgate the main pos and neg wires are to big to fit without having to trim them down
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0 of 0 found this helpful
Rockford Fosgate Punch P400X4
Brad from Maitland, MO on 4/8/2018
Great product. Sounds great and easy set up!!!
Pros: Easy set up with cd!
Cons: None
1 of 1 found this helpful
Rockford Fosgate Punch P400X4
Tracy from Decatur, IL on 10/12/2017
I was very impressed with this purchase. I had a older Rockford fasgate amp that was a 1500 four channel, it finally gave out. This amp is nice and clear with no distortion at high volume, the older amp got distortion at high volume, can't go wrong with this amp
Pros: Nice and clear no distortion at high volume
Cons: With the clarion navigation deck, i couldn't get the amp to line out like my sub amp Rockford fasgate 1000bd
2 of 3 found this helpful
Good for the money
John from Yorkville, IL on 8/18/2017
This thing puts out all the power it advertises and for the price,pretty cleanly! I set my gains with an oscilloscope and the clipping light matched perfectly with the distorted sine wave so that was extra assurance that I set the dial correctly.I have it bridged and powering two 6.5's in the doors.They are way overpowering my sub at this point which was expected because my sub is only getting 300 watts.No complaints with this amp so far!
Pros: Good value
Cons: Gets a bit hot when playing for a long time but that's expected from a class AB amp.
8 of 8 found this helpful
Rockford Fosgate Punch P400X4
Crutchfield customer from Wv on 12/24/2016
3 of 6 found this helpful
2001 jeep TJ
Stuart from Nashville, TN on 8/28/2016
Very satisfied Good upgrade for my system
Pros: Easy install and setup
Cons:
2 of 3 found this helpful
Punch amp delivers K.O.
Karl from Dundas, MN on 7/5/2016
It has been years since I have upgraded a car stereo but I have always been loyal to Rockford Fosgate. This amp is the perfect amplifier for those that are looking to take their factory stereo to the next level. I was really surprised at just how much more power this amp puts out over the factory head unit. I used to turn my stereo up to 20 before I could hear it clearly. Now I can hear it clearly at volume level 6. Hats off to RF for making excellent products.
Pros: Adds clean undistorted power loud built in crossovers
Cons: None yet
8 of 8 found this helpful
Never Going Back
Sir Shops-a-lot from Northeast Texas on 5/31/2016
I can't believe I thought powering my speakers through the Pioneer head-unit sounded good. This Rockford Fosgate amp is a revelation. Not so much in loudness but in liveness and immersive sound. I run it through Focal Integration speakers, which had a "colored" sound when powered by the head-unit. Through this R-F amp the Focals have clarity and vehicle-filling sound. I think this amp and speaker combination adds to the liveness effect, given that Focals have a reputation for "revealing" sound. Recordings I have heard for years have a fresh perspective, especially over HD radio.
Pros: The featured Trans-ANA circuitry is a deal-maker.
Cons: I think a bypass switch for the punchEQ and crossover circuitry would be nice. I'm a flat-EQ listener and also the Focals are pretty punchy already.
12 of 13 found this helpful
Good amp
Raja from fredericksburg, VA on 3/6/2016
1 of 23 found this helpful
Rockford Fosgate Punch P400X4
Brandon T from Mt Vernon, IL on 2/24/2016
Installed this amp to power my component speakers. 2-6x9's and 2-6 3/4" speakers. Super easy to install, and the SMART no clipping is really easy to setup. Sits very nicely under my passenger seat.
Pros: Super easy setup, enough power for component speakers. Sounds AMAZING!
Cons: Using the SMART clipping setup, i felt the speakers were a bit under powered. I increased gain a bit above their recommended level and now it sounds good.
7 of 8 found this helpful
no complaints
joseph from humble, TX on 1/24/2016
bought the p400x4 to power a set of p1675 components for the front and a set of p16 coax in the rear. it works great in my set up and the c.l.e.a.n. system makes it easy to set the gains
Pros: good for the money
Cons: none so far
4 of 5 found this helpful
Great bang for the buck!
Crutchfield customer from Washington on 12/29/2015
I got this amp on sale. At that price point it is a truly excellent performer. Musically solid with very little coloration and decent power for a nice set of components in the front and co-ax in the rear.
Pros: - High performance for the price - Good power and clarity
Cons: - At this price point I really can't complain. It certainly isn't a high-end 4-channel amp, but it performs at a good mid-level for a good sale price.
5 of 6 found this helpful
very nice piece of equipment
brandon from Middletown ct, on 12/26/2014
Works very well, I love the auto setup of tuning it so yur speakers aren't clipping or getting any distortion and I personally think that there putting out a lot more power than 50rms id say more like 75 80 great amplifier
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12 of 12 found this helpful
