Rockford Fosgate PBR500X1 500W RMS Mono Class BR Punch Amplifier

Rockford Fosgate Punch PBR500X1

500 Watt Punch Series Boosted Rail Ultra Compact Monoblock Subwoofer Amplifier

500 Watt Punch Series Boosted Rail Ultra Compact Monoblock Subwoofer Amplifier

• RMS 175W x 1 @ 4 ohms, 300W x 1 @ 2 ohms, 500W x 1 @ 1 ohm
• Features Rockford Fosgate's Class-BR Topology
• CEA-2006 Compliant
• Ultra Compact Chassis
• Boosted Rail Design
• Dimensions: 8.25"L x 4.25"W x 1.53"H

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Rockford Fosgate

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Rockford Fosgate Punch PBR500X1

PBR500X1 - 500 Watt Amplifier with Boosted Rail Technology

To achieve higher efficiency with lower distortion, Rockford's BR topology combines, Cycle-by-Cycle, an indirectly coupled high/low voltage rail linear topology with a switched high/low voltage linear rail topology. This combination yields an unsurpassed power density (watts per cubic inch). In addition, this patented technology allows the chassis design to be much smaller than traditional sized amplifier - 1.53" x 4.25" x 8.2" - making this amp a great solution for smaller stealth installations, motorcycles and recreational vehicles. In fact, now, with the introduction of the Rockford Fosgate RFKHD9813, installing the PBR500X1 into select 1998 - 2013 Harley Davidson motorcycles has never been easier. With unparalleled technology, flexible installation options, and big power from such a small footprint Rockford Fosgate has ensured that everyone can put a little Punch in any system.

Punch EQ2

Punch EQ2 - Jim Fosgate's Brainchild

The Punch EQ on-board equalization circuit helps correct the acoustical deficiencies often found in car audio systems. These deficiencies were researched and graphed out by none other than Jim Fosgate himself. From that forward thinking approach, we now have the Punch EQ2. When accompanied by the Optional Remote Punch EQ, the user has full control of a variable bass boost centered at 45 Hz.


MEHSA³ - Max Efficiency Heat Sink Application

MEHSA3 is a proprietary process that yields up to five times better heat transfer than traditional FET mounting techniques, using the exact same components. A multi-layer insulated metal substrate operating with minimal thermal resistance spreads heat both downward & outward to quickly dissipate heat from each device across the heatsink. This process allows Rockford Fosgate to squeeze more watts per cubic inch from every output device as well as provide consistent thermal stability. The higher power handling results in a 20% reduction in thermal impedance.

DSM - PBR300X1 Model Shown

DSM - Discrete Surface Mounted Components

An industry-leading manufacturing process, DSM utilizes high-speed robotics, high-quality 1% tight-tolerance parts and large board traces. The discrete components are laser etched to meet a particular value and a very low tolerance. This lower tolerance improves the efficiency of the circuit, decreases cross-talk from other discrete components and lowers operating temperature. These superior components are used by aerospace, automotive, and cellular manufacturers.





General Features:

  • Punch Series BR Monoblock Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 175 watts x 1 chan.
    • 2 ohms: 300 watts x 1 chan.
    • 1 ohm: 500 watts x 1 chan.
  • Features Rockford Fosgate's Class-BR Topology
  • CEA-2006 compliant amplifier
  • Ultra compact chassis
  • MOSFET output stage
  • Boosted Rail amp technology
  • Convection cooling design
  • Extruded aluminum heat sink
  • Low level RCA input connection
  • High level speaker input connection
  • 12dB / Octave Butterworth crossover
  • Detachable Compression Terminals
  • LED power (blue) and protect (red) indicators
  • Variable 4-6 volt hi level DC offset voltage input turn-on control
  • Features MEHSA3 (Maximum Efficiency Heat Sink Application - gen. 3)
  • Perfect for smaller stealth installations
  • Great for motorcycles and recreational vehicles
  • Optional Remote Punch EQ provides 0dB to +18dB @ 45Hz
  • Wiring w/ Mounting Plate for Harley-Davidson Motorcycles Available: Rockford Fosgate RFKHD9813
  • 12 Gauge speaker wire output terminals
  • 8 gauge OFC power and ground wiring is recommended for installation.
  • 1-year Manufacturer's Warranty


Amplifier Specifications:

  • Input sensitivity:
    • Low level: 150mV - 4V
    • High level: 400mV - 11V
  • Operating voltage: 9 - 16 VDC
  • Recommended fuse rating: 60 A x 1
    (not included)
  • Max. current draw (13.8V Sinewave): 60 A
  • Average current draw (13.8V Music): 30 A
  • Frequency response: 20 - 250 Hz, +/- 3 dB
  • Total harmonic distortion: <1.0%
  • Signal to Noise Ratio: ≥105 dB
  • CMRR: >55 dB @ 1 kHz
  • Damping Factor: >200
  • Crossover controls: 35 - 250 Hz Low Pass @ 12dB/Octave
  • CEA-2006 Power Rating: 175W x 1 @ 4Ω ≤1.0% THD+N
  • Weight: 3.30 lbs
  • Dimensions: 8.25"L x 4.25"W x 1.53"H

Check out the Rockford Fosgate Punch PBR500X1 Owner's Manual

Check out the Class-BR Amplifier Installation Advisory From Rockford Fosgate

This item is currently not eligible for our low price guarantee. This may be due to supply constraints, manufacturer restrictions, or another reason. We're always here to help you get the best price possible so give us a call or email today. Our experts will do their best to build the system that works for you within the rules.

Power Specifications - Subwoofer Channel
RMS Power @ 4 ohms
175 watts x 1 channels
RMS Power @ 2 ohms
300 watts x 1 channels
RMS Power @ 1 ohm
500 watts x 1 channels
Amplifier Specifications
Amplifier Series
Punch BR (Rockford Fosgate)
Marine Certified
Amplifier Class
Number of Channels
1 - Mono
Total RMS Power Output
500 watts
Maximum Input Gauge Size
Minimum Impedance Unbridged
1 ohms
Minimum Impedance Bridged
Not Bridgeable
THD at Rated RMS Power
Speaker Level Inputs
Preamp Outputs
Built-in Crossover
Low-Pass (LP)
Low-Pass Crossover Frequency
35 - 250 Hz
Signal-to-Noise Ratio
105 dB
Bass/Gain Remote
Optional (Accessory required and sold separately)
Fan Cooled
Fuse Rating
60A X 1 In-Line Fuse Recommended
Total Fuse Rating
CEA-2006 Compliant
Sonic Certified Amplifier
Not Tested
Amp Bluetooth Connectivity
Hi-Res Certified
Authorized Dealer
Authorized Dealer
What is in the box?
WITB: Amplifiers
Other Accessory #1
Other Accessory #2
Other Accessory #3
Other Accessory #4
Other Accessory #5
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Rockford Fosgate Punch PBR500X1

Rockford Fosgate Punch PBR500X1



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By feature average rating



February 19, 2014

Good amp, bad experience

I purchased the Rockford Fosgate PBR500X1 in november of 2013. It functioned properly with the Rockford Fosgate P3S-1X12 subwoofer for about 1 month, then it began to mysteriously shut off. Now, this amp was recommended by SonicElectronix on the bio of the subwoofer, but come to find out that the subwoofer was not correctly cooling itself or letting the amp cool down either. All wiring was done in recommended 10 gauge with 35A fuse with the Kicker amp kit I purchased as well. I am now in the market for the Rockford Fosgate R500X1D amplifier to not run at 1 ohms but at 4 ohms to help cooling with it not only being D class but at a lower wattage for the subwoofer to still kick but to stay cool. Overall, good amp, just I don't believe that class BR is good for any sub over 8-10".


found this helpful.


August 7, 2012

Killer amp, super small form factor

This amp is an amazing performer. Birth sheet says it puts out almost 600watts rms at 1ohm. It definitely pulls current. Pushes my kicker L7 at 1ohm and does not drop out. It does run hot at 1ohm, so you might need cooling. Because of the heat, I question it's durability.


found this helpful.


July 5, 2015

Awsome Amp!!!

This Amp Really makes my subs knock! (2-12's) Amazing for its size. been running it in my truck for @ two years and not one single issue! does feel hot to the touch after running for a while on hot days. But I'm absolutely positive Fosgate would have put a fan on it if it needed it.
you will not be disappointed!


found this helpful.


March 21, 2016

rockfordfosgate punch pbr500x1

This amp is a small giant in size and power best money spend highly recommend to anyone.


found this helpful.

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500 Watt Punch Series Boosted Rail Ultra Compact Monoblock Subwoofer Amplifier


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Bass Remote

A bass remote made specifically for the this amplifier.



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