ROCKFORD FOSGATE Punch 400 Watt 4-Channel Amplifier

The Punch PBR400X4D is a 400 Watt full-range amp designed for compact systems. This efficient 4-channel amp packs a Punch in UTVs, motorcycles, and hybrid-electric vehicles without sucking a lot of juice from your electrical system.

The Rockford PBR400X4D is a full-range 4-channel amplifier designed for stereo front/rear systems that requires little space. The BRT (Boosted Rail Technology) is an ultra efficient design that generates 400 Watts of power! The BRT also has a variable hi-level DC offset turn-on circuit for easy installation into any OEM system. Great for motorcycles and recreational vehicles.

• 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
• Extruded aluminum heatsink
• Selectable Fixed 12dB/Octave Butterworth Crossovers
• Muted turn on
• Rockford Fosgate proprietary protection
• Discrete surface mount technology
• Compact design for stealth installations
• CEA-2006 and CE compliant
• 1 Year Warranty

CEA-2006 (amplifier)

Power ratings on Rockford Fosgate amplifiers conform to CEA-2006 industry standards. These guidelines mean your amplifier's ...

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CEA-2006 (amplifier)

Power ratings on Rockford Fosgate amplifiers conform to CEA-2006 industry standards. These guidelines mean your amplifier's output power ratings are REAL POWER numbers, not inflated marketing ratings.

Full Range Class-D

A full-range version of the Class-D topology which is a high efficiency amplifier design that reduces ...

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Full Range Class-D

A full-range version of the Class-D topology which is a high efficiency amplifier design that reduces current consumption from the charging system.

MEHSA³

MEHSA³ reduces MOSFET temperatures, lowers distortion, increases durability and prolongs the output device life span.

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MEHSA³

MEHSA³ reduces MOSFET temperatures, lowers distortion, increases durability and prolongs the output device life span.

DSM

DSM utilize 1% tight-tolerances improving efficiency of the circuit, decreases cross-talk from other discrete components and ...

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DSM

DSM utilize 1% tight-tolerances improving efficiency of the circuit, decreases cross-talk from other discrete components and lowers operating temperature.

Engineered In The USA

These Avatars are a personal signature from the Rockford Fosgate team member(s) who designed and engineered ...

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CEA-2006 Compliant

CEA-2006 Power Rating
50W x 4 @ 4Ω
≤1.0% THD+N

Number of Channels

4

Total Power 
(Sum of Rated Power)

400 Watts

Rated Power 
(RMS Continuous Power)

50 Watts x 4 @ 4-Ohm 
100 Watts x 4 @ 2-Ohm 
200 Watts x 2 @ 4-Ohm Bridged

Dynamic Power 
(PVC/PowerCube®)

75 Watts x 4 @ 4-Ohm 
130 Watts x 4 @ 2-Ohm 
270 Watts x 2 @ 4-Ohm Bridged

Bridgeable

Yes

Frequency Response

20Hz - 20kHz +/- 1dB

Input Sensitivity

150 mV to 12 V

Circuit Topology Class

Class D

Efficiency (average)

> 75%

Total Harmonic Distortion (THD+Noise)

4-Ohm < 1.0 
2-Ohm < 1.0

Signal Input

Input Switch: 2ch/4ch input switch 
Hi-Level: Variable DC offset sensitivity 
High-Level: Harness 
Low-Level: 2 Pair RCA

Signal Output

—

Tone Controls

—

Crossover Controls

High-Pass: 60Hz or 80Hz @ 12dB/Octave
Low-Pass: 80Hz @ 12dB/Octave

Remote Controls

—

Visual Indicators

Power: Blue
Protect: Red
Input Clip: Red
Output Clip: Blue/Violet/Red

LED Color Legend
BLUE: <0.5% TDH
VIOLET: 1% THD
RED: ≥10% THD

Power Wire Gauge

8 AWG

Power Input Connector

Detachable Compression Terminal

Speaker Wire Gauge

16 AWG

Speaker Output Connector

Front: 4-Pin Harness
Rear: 4-Pin Harness

Cooling

Convection

Heatsink

Extruded Aluminum

Operating Voltage

9 - 16 VDC

Recommended Fuse 
(not included)

60 A

Average Current Draw (13.8V Music)

27 A

Max. Current Draw (13.8V Sinewave)

50 A

Suggested Alternator

75 A

Dimensional Diagram

Dimensions (H x W x D)

1.53 x 4.25 x 6.75 (in) 
3.9 x 10.79 x 17.16 (cm)

Shipping Weight

3.1 Lbs. (1.4 Kg.)