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Rockford Fosgate PBR300X4 Punch BRT 300-Watt Ultra Compact 4-Channel Amplifier

4.4 out of 5 stars 268 customer reviews
| 66 answered questions

List Price: $269.99
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Standard Packaging
  • Four-channel, 4-ohm (only) amplifier with 75 Watts x 4 @ 4-Ohms RMS power rating and 300 watts RMS total power
  • Designed for stereo front/rear systems that require little space--just 1.53 x 4.25 x 6.75 inches
  • High- and low-level inputs with variable 4-6 volt hi level DC offset voltage input turn-on control
  • Selectable 80Hz LP/AP/80Hz HP filter @ 12dB/Octave
  • One-year limited warranty
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Frequently Bought Together

  • Rockford Fosgate PBR300X4 Punch BRT 300-Watt Ultra Compact 4-Channel Amplifier
  • +
  • Rockford 10 Awg Power Installation Kit
  • +
  • Harley-Davidson Ultra and Roadglide 5.25" to 6.5" Inch Factory to Aftermarket Speaker Adapter Converter Trim Ring (2005, 2006 2007 2008 2009 2010 2011)
Total price: $194.61
Buy the selected items together


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Product Packaging: Standard Packaging


Product Information

Product Packaging:Standard Packaging
Product Dimensions 6.8 x 4.2 x 1.5 inches
Item Weight 2.5 pounds
Shipping Weight 2.9 pounds (View shipping rates and policies)
Domestic Shipping Item can be shipped within U.S.
International Shipping This item is not eligible for international shipping. Learn More
ASIN B004T163SY
Item model number PBR300X4
Customer Reviews
4.4 out of 5 stars 268 customer reviews

4.4 out of 5 stars
Best Sellers Rank #7 in Electronics > Car Electronics > Car Audio > Amplifiers > Mono Amplifiers
#8 in Electronics > Car Electronics > Car Audio > Amplifiers > Multichannel Amplifiers

Technical Specification

Warranty & Support

Product Warranty: For warranty information about this product, please click here [PDF ]

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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

By S. Shelton on December 21, 2011
Package Type: Standard Packaging Verified Purchase
I'm not really an expert on amps because my current setup is the first time I've ever attempted to upgrade my truck's audio with new amplifiers. What I can say is that this device puts out far more volume than I could handle if I allowed it to do so. The audio sounds very clean to me too.

I was not interested in blasting ghettos or "impressing" people in other vehicles with my audio system. I only wanted to have nice, clean, loud sound and that's exactly what this amp provides. Space in my vehicle was limited so this thing's tiny size is a great benefit since I wanted all of this stuff to be hidden.

If I had to mention any minor complaints it would be the manner by which wires are connected because I'd have preferred more standardized plugs and 4 gauge power/ground connections, but this is a minor complaint.

My main complaint is that the thing gets hot. Very hot. I can't help but wonder if the daily fluxuation from intense heat to cold will damage the internal components after a while. I would not recommend placing this directly against carpet and on mine I mounted it to a piece of diamond-plate aluminum with washers lifting it from the plate. This allows air to circulate around the entire device and allows the plate to act as a big heat sink.
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Package Type: Standard Packaging Verified Purchase
this small little amp pushes with excellent sound 4 Lanzar 200 watt speakers with no problem. had to wire with high input instead of RCA's. Very Happy!!! Can hear it clear as if you were sitting right next to it from a block away
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Package Type: Standard Packaging Verified Purchase
Man this amp is the best OMG!!!! 2013 road glide is knocking pushing 2 set of fosgate 6x9 the bass is unbelievable as nd the amp doesn't get hot like other reviews stated. All my Harley brother get this amp!!! CHOPPERS! !! One Team -One Dream
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Package Type: Standard Packaging
I'm using this amp on my road glide !!!! Perfect two 6-1/2 they sound wonderful using this amplifier . You can't go wrong ........
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Package Type: Standard Packaging Verified Purchase
I bought this amp to replace a Clarion XC1410, and it blows the Clarion away! In order to get the amp to perform to it's max potential, you must turn the front and rear gains up nearly all the way. Many other amp gains that I've used in the past only needed to be turned to a little past halfway, but not this one. I also read a lot of the other reviews that said it runs hot sometimes, so I went ahead and mounted a 12v cooling fan directly to the unit (see photo in customer images); you can simply power the cooling fan by using the amps ground and remote hook ups. I have this installed under the dash in a 2012 Nissan Titan. I can turn my head unit up to a volume that I can barely stand, and the amp hasn't cut-out. You can't beat it for the price!
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Package Type: Standard Packaging Verified Purchase
Installed on my 2012 Harley Ultra. Amp Works Great and I'm Very Happy with this Amp. I also purchased after reading the installation directions the Installation kit just for Harleys. The Amp requires a 8 guage positive direct to the battery and all the speakers need extensive wiring to boot. just seemed easyer to buy the harness pre made in this case. the mounting plate for the amp attaches to the top of the radio and is easy to install BUT!! This require you to remove your CB/Com system with No New Place to install it and the directions don't offer any information of any kind about the delama rockford created.. Poor Something going on here to just forget or avoid a major part of the system installation while desiging a install kit. I just double sided taped it to the top of the amp. Hope the heat gets out properly and the amp holds up. rockford doubles the amp warranty of you use the install kit. we shall see. Note: The box does say that this kit is for my 2012 HD Ultra Classic FLHTCUI. CB/COM system is standard equipment
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Package Type: Standard Packaging Verified Purchase
This amp has no problem pushing a pair of 6-1/2" component infinity kappas, along with another pair of 6-1/2" inifinity kappas. This amp makes my truck ROCK HARD!!
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Package Type: Standard Packaging Verified Purchase
I put this in my Altima Coupe, since aside from the trunk there's really nowhere to put a larger amplifier. This unit is so small if fit right under center console in back of the kick panel. The wiring was dead simple, aside from getting power from the battery through the firewall. I really like the plugs for the speaker wires, power/ground/remote. They make it easy to get the wires connected before you connect the amplifier, which is a huge help in tight spaces.

I have this amp driving 2x Polk DB651s 6.5" doors, and 2x Kicker 6x9 DSC693. The sound is incredible, very clear even at high volume, and much better sound than through my head unit which provided 22w RMS per channel. The adjustable gain is good for balancing, but I do wish that the crossover was adjustable and not just a fixed 80Hz high pass/low pass/through switch. It gets the job done, but for true speaker tuning it would be better to have a full control over the crossover on both channels. And FWIW, I would pay an extra $50 for a model that had this additional capability. I think others would too!
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