Rockford Fosgate Punch PBR300X2

150W RMS Punch Series Boosted Rail Compact 2-Channel Amplifier

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• RMS 100W x 2 @ 4 ohms, 150W x 2 @ 2 ohms, 300W x 1 @ 4 ohm Bridged
• Features Rockford Fosgate's Class-BR Topology
• CEA-2006 Compliant
• Ultra Compact Chassis
• Boosted Rail Design
• Dimensions: 6.75"L x 4.25"W x 1.53"H

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Rockford Fosgate Punch PBR300X2

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Product Highlights

• RMS 100W x 2 @ 4 ohms, 150W x 2 @ 2 ohms, 300W x 1 @ 4 ohm Bridged
• Features Rockford Fosgate's Class-BR Topology
• CEA-2006 Compliant
• Ultra Compact Chassis
• Boosted Rail Design
• Dimensions: 6.75"L x 4.25"W x 1.53"H


Rockford Fosgate

Authorized dealer

Rockford Fosgate Punch PBR300X2

PBR300X2- 300 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 6.75" - 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 PBR300X2 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 - 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: 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.
  • 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: 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 Punch PBR300X2 Owner's Manual

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

Specifications & Details

Power Specifications - Full Range Channels
RMS Power @ 4 ohms
100 watts x 2 channel
RMS Power @ 2 ohms
150 watts x 2 channel
Bridged RMS Power
300 watts x 1 channel
Amplifier Specifications
Punch BR Series
Marine Certified
Amplifier Class
Number of Channels
Total RMS Power Output
300 watts
Maximum Input Gauge Size
10 AWG
Minimum Impedance Unbridged
2 ohms
Minimum Impedance Bridged
4 ohms
Frequency Response
20 - 20,000 Hz
THD at Rated RMS Power
Speaker Level Inputs
Preamp Outputs
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
Full (AP)
High-Pass Crossover Frequency
50 - 500 Hz
Low-Pass Crossover Frequency
50 - 500 Hz
Signal-to-Noise Ratio
100 dB
Remote bass/level controller
Optional (Accessory required and sold separately)
Fan Cooled
Fuse Rating
50A X 1 In-Line Fuse Recommended
CEA-2031 Compliant
Sonic Certified Amplifier
Not Tested
Amp Bluetooth Connectivity
Hi-Res Certified
What is in the box?
User manual
WITB: Amplifiers
High-level input wiring harness w/ molex connectors (2)
Other Accessory #6
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Item Details


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Customer Ratings & Reviews

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Harley Davidson

I purchased two of these for my 2012 Ultra. I have one on top of the radio feeding the front speakers and one located in the trunk feeding the speakers in the lowers. I picked this model for the ability to be 2 ohm stable and produce 150 watts per channel. They do run hot and will need air around them. They blow away all the other amps I have used on bikes up to this point. Be prepared to piss off the cars around you even at 70. My friends tell me you can hear me very clear several blocks away. Running Polk MM 6 1/2 for speakers.

By Possum on September 17, 2013


found this helpful.

excellent performance

Awesome little amp for a great price.
Fast shipping and a pleasure dealing with reps.

By harry on July 10, 2013


found this helpful.

Great Little Amp!

I installed this amp on my Harley Street Glide to drive two 6.5" Polk MM651 2ohm fairing speakers. I'm pushing over 150 watts per channel with this beast! The amp fits great and sounds incredible! I don't believe you will find better sound quality and power in such a small package for the price!

By Ryan on April 12, 2013


found this helpful.

Rockford Fosgate PBR 300x2

This is one kick little amp, very small and lots of punch! it drives 4-Rockford 6.5" on my Harley davidson and I'm going to purchase one more to drive a set of 6x9 in my saddle bags! perfect crisp clean and did I mention LOUD! best bang for the buck and fast shipping.

Go get yourself one.


By Watsondog on September 6, 2013


found this helpful.

Awesome service!!

Big power for such a small unit. Quick delivery and awesome service.

By Michael on August 14, 2013


found this helpful.

The best small amp with true power

I would Recommend this to anybody who's looking for a good amp with small space this amp is a true 300 watts I'm glad I found this amp I am very happy with it

By Gary w on August 24, 2014


found this helpful.

Great little amp

The size of this amp gives you the ability to install it were there in not much room,the amp has enough power for my door speakers

By fernando on January 27, 2015


found this helpful.

Rockford Fosgate PBR300X2

I purchase this amp to drive some Polk speakers and boy does. Becasue of it size it was easy to install and was even easier to adjust. For the price I think it was a great buy. Thanks Sonic and Rockford!

By JC on May 20, 2014


found this helpful.

This little Amp rocks

Put in my sxs,uses very little power can run off stock battery for hrs & always starts right up,built a lexan cover around it (to keep dry & clean) w/ a 70mm fan in it & it bearly gets warm, use (2) 6x9 speakers,its crystal clear.& loud.

By whiskeythrottle on June 21, 2013


found this helpful.

good value

I own two rockford fosgate pbr300x2, well built amp, easy to install in roadglide fairing after making braket easy to wire up to radio. Sounds great.

By charley on January 31, 2014


found this helpful.


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