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Rockford Fosgate PBR400X4D Punch 400 Watt Full-Range 4-Channel Amplifier

Brand: Rockford Fosgate
Model Number: PBR400X4D
UPC: 0780687351427
Rockford Fosgate
Model Number: PBR400X4D
UPC: 0780687351427

Rockford Fosgate PBR400X4D 400 Watt Full-Range 4-Channel Amplifier

  • Full Range Class-D
  • Differential inputs with high level auto turn-on feature
  • 8 AWG power/ground connector
  • Remote-Out feature when using high level inputs
  • C.L.E.A.N. input/output clip detection and indicator LEDs
  • Real time output and power supply thermal sensing

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Product Description

Features & Specifications



Rockford Fosgate PBR400X4D 400 Watt Full-Range 4-Channel Amplifier

This lightweight packs a punch

Rockford Fosgate’s incredibly small Punch Rockford PBR400X4D 4-channel amp will put out 50 watts RMS to each of your front and rear speakers, giving you the power to fill your listening space with great-sounding music. You can also run this amp in 2-channel mode to drive a couple of high-performance speakers or subs with up to 200 watts RMS each.

Boosted Rail (BR) amp technology

This Punch Class Rockford PBR400X4D BR amplifier generates this power from a very tiny case — literally the size of your hand. Boosted Rail amp technology uses capacitors and high-speed circuitry to boost the amp’s power supply voltage when needed, so it can handle musical peaks without missing a beat. Rockford Fosgate uses this new technology to create a remarkable amp that fits almost anywhere and delivers powerful sound.

Features that keep you rockin’

The amp also features speaker-level inputs with signal-sensing turn-on, allowing you to connect into almost any system without having to run a turn-on lead back to the receiver. An extruded aluminum heat sink combines with Rockford Fosgate’s heat management technology to make sure your tunes keep rockin’ — even when you’re playing loud.

Easy to set for optimum performance

The Rockford PBR400X4D features Rockford Fosgate’s C.L.E.A.N. technology (Calibrated Level Eliminates Audible Noise) — a setup system that ensures your music will sound as clean and powerful as possible. Just play the setup CD or a downloaded tone, adjust the receiver volume until a red clip light on the amp goes out, then turn the amp gain up until a blue light comes on. It’s that simple. When your receiver reaches maximum clean volume, you’ll get maximum clean power from your Punch amp. At quiet listening levels, you’ll hear less background noise and more of your music.

Brand Rockford Fosgate   Model Rockford Fosgate PBR400X4D
Product: Rockford Fosgate PBR400X4D Punch 400 Watt Full-Range 4-Channel Amplifier

RMS Power Output (Watts x Channels) 50 x 4
Peak Power Output (Watts x Channels) —
Power at 2 Ohms (Watts x Channels) 100 x 4
Bridged Power (Watts x Channels) 200 x 2
Minimum Impedance Bridged 4
Minimum Impedance Unbridged 2
Minimum Impedance 2
Best Frequency Response 20-20k Hz
THD at Rated RMS Power 1%
Signal to Noise Ratio 80 dB
Input Voltage 14.4v


Amplifier Class D
Low-Pass Crossover Frequency 80 Hz
Low-Pass Slope (dB/octave) 12dB/oct
High-Pass Crossover Frequency 60Hz, 80Hz
High-Pass Slope (dB/octave) 12dB/oct
Bass Boost No
Bass Boost Frequency N/A
Fan Cooled No
Fuse Rating 60
Speaker Level Inputs Harness
Preamp Outputs No
Width (inches) 6-3/4
Height (inches) 1-9/16
Depth (inches) 4-5/16

Mobile Amplifier Class

Class D

Mobile Amplifier Features


UTV Amplifier


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Rockford Fosgate offers a 1 year warranty


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