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Rockford Fosgate Punch PBR300X2

300 Watts Punch Series Boosted Rail Compact 2-Channel Amplifier

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General Features:

  • Punch Series BR Monoblock Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 100 watts x 2 chan.
    • 2 ohms: 150 watts x 2 chan.
    • 4 ohm Bridged: 300 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
  • Detachable Compression Terminals
  • 12dB / Octave Butterworth crossover
  • Selectable crossover mode: LP/AP/HP
  • 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
  • 16 Gauge speaker wire output terminals
  • 10 gauge OFC power and ground wiring is recommended for installation.
  • 90 Day Sonic Electronix Warranty


Amplifier Specifications:

  • Input sensitivity:
    • Low level: 150mV - 4V
    • High level: 400mV - 11V
  • Operating voltage: 9 - 16 VDC
  • Recommended fuse rating: 50 A x 1
    (not included)
  • Max. current draw (13.8V Sinewave): 45 A
  • Average current draw (13.8V Music): 23 A
  • Frequency response: 20 - 20,000 Hz, +/- 3 dB
  • Total harmonic distortion: <1.0%
  • Signal to Noise Ratio: ≥100 dB
  • CMRR: >55 dB @ 1 kHz
  • Damping Factor: >200
  • High-Pass: 50Hz - 500Hz @ 12dB/Octave
  • Low-Pass: 50Hz - 500Hz @ 12dB/Octave
  • CEA-2006 Power Rating: 100W x 2 @ 4Ω ≤1.0% THD+N
  • Weight: 2.76 lbs
  • Dimensions: 6.75"L x 4.25"W x 1.53"H

Check out the Rockford Fosgate Punch PBR300X2 Owner's Manual

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


Second Depth
The second depth is used only when the box is slanted or angled. This value is the top measurement and it is measured in inches.
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.
The height of the item, measured from top to bottom, in inches.
The width of the item from left to right (side-to-side) measured in inches.
Color of handle.

Warranty and Return Policy

Parts Warranty Duration
90 days
Labor Warranty Duration
90 days
Warranty Provider
Sonic Electronix

Summary of Customer Ratings & Reviews

Rating Distribution

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Average Attribution Rating

Browse 3 questions and 12 answers
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Why did you choose this?
Sonic Electronix Store
Space is a premium in my '14 Wrangler. This little amp really allows my 10" JL sub to hit hard. It does a great job considering the size vs. power output.
Matthew W on May 26, 2016
I chose this because it is to replace another makers unit which didn't last 6 months on my motorcycle.I checked this unit out on Youtube and was impressed with what I saw.
Stephen M on Jul 19, 2015
fits under Harley touring fairing very easy.
Mark S on Jan 19, 2016
small compact, great power and you don't have to run a remote wire if your hooking it up to your factory headunit on a motorcycle
matthew c on Apr 11, 2015
I Want to install in a 2012 Harley road glide with j&m 7.25 speakers and a tweeter pod. What do I need ?
David L on Oct 26, 2014
Best Answer: David,
I have installed two of these in a very small car and love them. One powers my component speakers and the second is driving my subwoofer. As long as your speakers can handle the power you would need the following
•A heavy gauge wire to power the amp. The shorter the wire the higher gauge wire you can use. I think a 6 or 8 gauge should work fine for your bike.
•Inline Fuse on the power wire to drive your amp. Some power wires come with a inline fuse. I would look for one and purchase it. It makes for a much cleaner install.
•Speaker wirer.
•A 18 to 22 gauge wire to run from your receiver to you amp to turn it on when the radio is on. I used 22 gauge for both of mine.
•RCA cables
•Some way to mount the amp. Homemade bracket?

Sonic cell sales Amp kits like:
Belva BAK82
InstallBay AK8
Belva BAK82BL (Blue)

Note: The Amp kits above are two channel left and right. If have four

I would hold off on a capacitor. You can always add one later if you get a lot of alternator humming/wining. I’m not using one and my system is fine without it.

Hopefully this helps.
Reply · Report · John C on Oct 27, 2014
· Add Answer · I Have This Question Too (0)
Anyone running this amp with the Infinity Kappa 62.11i on there HOG? What are your thoughts?
Frankie on Mar 31, 2016
Rockford Fosgate PBR300X2
Rockford Fosgate PBR300X2
Infinity 62.11I
Infinity 62.11I
Best Answer: •I'm using two of these amps with Polk speakers in small convertible. Ones is powering a 10” Polk sub and the other amp is powering Polk component speakers. This Amp are great for tight installations. I don’t think you will regret purchasing this for your Hog. The amp should drive your Ininity speakers nicely. Ride Safety.
Reply · Report · John C on Apr 1, 2016
· Add Answer · I Have This Question Too (0)

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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Rockford Fosgate Punch PBR300X2