Buy Now, Pay Later
As low as
/ mo
Learn more
- – Up to 36-month term if approved
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
Free shipping on this product
30-day returns
Learn more
FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
11 left in stock
Arrives
Friday, Mar 27
Style: P400X4
Product Packaging: Standard Packaging
Features
- The Punch P400X4 is a 400 watt 4-channel amplifier (2.38 x 7.76 x 11.03) is perfect for a 4-way full-range system or a 3-way system having a front stage with subwoofers on the rear channels
- Versatile multi-channel design is a perfect choice for virtually any vehicle (RMS Power Output: 50 Watts x 4 @ 4-Ohm OR 100 Watts x 4 @ 2-Ohm OR 200 Watts x 2 @ 4-Ohm Bridged)
- RCA inputs can accept both Hi and Low level audio signals without the need of a signal converter
- Featuring Class A/B topology, RCA pass-thru outputs, on-board Punch EQ with +18dB boost @ 45Hz, variable 12 dB/Oct Butterworth crossovers, and C.L.E.A.N. Set-up
- Famous Rockford Fosgate build quality with a full 1-year warranty
Item dimensions L x W x H: 11 x 7.8 x 2.4 inches
Voltage: 12 Volts
Manufacturer: Rockford Fosgate
Mounting Type: Car Mount
Brand: Rockford Fosgate
Item dimensions L x W x H: 11 x 7.8 x 2.4 inches
Voltage: 12 Volts
Manufacturer: Rockford Fosgate
Mounting Type: Car Mount
Brand: Rockford Fosgate
Number of Channels: 4
Output Power: 400 Watts
Global Trade Identification Number: 72
UPC: 780687342272 739197278595 796327931423
Item Weight: 6.93 pounds
Product Dimensions: 11 x 7.8 x 2.4 inches
Item model number: P400X4
Batteries: 1 12V batteries required.
Is Discontinued By Manufacturer: No
Wireless Remote: No
Warranty: 1-Year Manufacturer Warranty
Height (inches): 9 inches
Width (inches): 5 inches
Weight: 11.3 Pounds
Date First Available: March 11, 2013
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Mar 27
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
Style: P400X4
Product Packaging: Standard Packaging
It's been quite a while since I bought an amp. The industry has really changed, and for the good. More features/perfornace for less cost. I've mostly owned Alpine and Precision Power amps, and I tried to buy another PPI, but they were out of stock, and I took a look at Rockford. The prices were pretty good at this time so I took a chance. The P400x4 is compact and heavy. I was surprised at the quality of construction, really nicely done. Things like that can tell you a lot about a company. Anyway, the feature set is also quite good, and being able to double the wattage from 4 to 2 ohms is seriously impressive. And the bottom line of course is the sound. This amp is really nice sounding. I'm running a set of Pioneer components, and the amp drives them effortlessly. They don't have much low bass, so I won't comment on that, but the balance and quality of vocals, instruments and highs is really good for the money. Imaging and soundstage, it's all there. I'll be buying another amp next year for the subs, and it'll be a Rockford Fosgate. Edit April 29/16 I changed up my system as I upgraded the wimpy stock 6x9 speakers on the back deck of my Altima with Pioneer TS-D6902R. I'm now running 2 channels of the amp to the rear speakers, and the front comps get the other 2 channels. Wow. This amp is making my jaw drop running all speakers full range. Lots of tight bass from the 6.5 and 6x9's. Clear, clean, effortless and more volume than I can handle. You really can't go wrong with these Punch amps.
...
show more
Reviewed in the United States on October 8, 2015 by Sharkman
Style: P400X4
Product Packaging: Standard Packaging
This is a great amplifier and I've had mine since 2018. You can tune it to the way you want and to prevent clipping it has a nice led indicator. I have Rockford Fosgate everything except my subwoofer amplifier and my front door speakers as I found something better for my application. I am using this to drive two cheap speakers on my rear deck and two JL C1 speakers that can perform at a high volume. My only dislike about this unit is between my aftermarket head unit and this amplifier I've found it simply can't produce enough volume before it starts clipping. I would've been happier at the time I bought this if I had gone with a more powerful Amp but for current me this suits me most fine. For most applications this will provide you with enough volume and quality that you need, unless you're trying to show off and it gets a little distorted when turned up too loud. This is a great Amp and once you set it up you'll never touch it again. I would recomend mounting it down as I used an 8 Guage wiring kit(could have gone with 4 Guage but this unit doesn't really need it) and you definitely don't want that to get pulled out. Would recomend for casual listening but not show boating.
...
show more
Reviewed in the United States on November 19, 2021 by Kevin
Style: P600X4
Product Packaging: Standard Packaging
Got this in yesterday and to my surprise the birth sheet was 821 watts! Running 2 sets of alpine type r 6.5 components at 4 ohms, my soundstream 4.560 was louder at 4 ohms but the sound quality on this is way cleaner. It is 3 times the price but you get what you pay for! The set up was kind of confusing at first with the clean set up, but found out my radio does not distort even at max volume, after that it was easy. Very clean look and for being 1/2 the size of my other amp it weighs a lot more. Sounds just as good as my wife's jl 700/5 xd but a lot cheaper. After breaking this in i read more and turned the punch eq up that also works on the hpf if you read instructions, after turning this up 1/2 way i can turn my stereo up 1/2 way and it is loud! So if you purchase it before you think its not loud play with the settings before thinking something is wrong. Just bought the t1 6/9', and t1 component 6.5's to match. Update this review once thats done to see how they match up with this amp soundwise.
...
show more
Reviewed in the United States on July 10, 2013 by michael young
Style: P600X4
Product Packaging: Standard Packaging
Was debating between this and the 4 channel Power series. I am glad I went with this one because it matches my speakers perfectly. I am pushing four 6.5 inch Sony 162ES component speakers which have an RMS rating of 90 watts. The birth certificate of this amp is over 100 watts per channel at 4 ohms so they match perfectly. It my opinion RF amps are the best amps you can get. The comfort that comes with buying this brand, knowing it will last for years and years is worth the cost. I don't feel like dealing with a dead amp every 2-3 years. I am also pushing my subs with the RF Punch 1000. I am freaking rocking out. The best sounding, well rounded system I have ever heard.
...
show more
Reviewed in the United States on February 9, 2026 by Mason Kelley
Style: P600X4
Product Packaging: Standard Packaging
I replaced an Alpine (100w x 4) class-D amp on my boat with this Rockford Fosgate (75w x 4) class A/B amp and it sounds much better . It's driving (4) Alpine 6 x 9 speakers, model 6912m. More than enough power. This amp gets just as loud as the 100w Alpine. I think both amps are plenty of power for the Infinity's. This amp was very easy to fine tune. Nice controls. Parametric Bass EQ let me pick the bass frequency I wanted to boost and then a separate gain control to adjust the bass level to just how I wanted it. Perfect Boom... but not too much to interfere with the rest of the music, but it's really there. Boom. All the harmonics that were missing with the class-D amp are back now. I listen to rock and occasionally rap/pop. This amp is perfect for that. Rock on Fosgate!
...
show more
Reviewed in the United States on May 30, 2014 by K. Koffman
Style: P600X4
Product Packaging: Standard Packaging
PUNCH p600.4 is a good amp, it produces a good amount of power and its clean sounding , high SQ. MY SPEC SHEET Claims 529 watts @ 4 ohms, thats right around 132 watts each channel@ 4 ohms. This amp has the c.l.e.a.n technology and it appears it does a good job cause the sound is clear at high volume, my ears give out before the clear music does. This amp is pushing 4 HERTZ door speakers and its loud, prolly hearing damage loud, but still clean and clear with no distortion. Of course i dont ride around with it playing full tilt but its fun to show off to stereo enthusiats.
...
show more
Reviewed in the United States on June 24, 2016 by rinney
Style: P400X4
Product Packaging: Standard Packaging
Amp makes my jl audio component speakers sound awesome. The city that comes with the amp helps you set the amp correctly. Also very very easy to install somewhere. I have a 2014 Impala the new model sounds awesome in my car.
Reviewed in the United States on September 10, 2020 by James C.