P400-4

400 Watt 4-Channel Amplifier P400-4

The Punch P400-4 is a 4-channel amplifier producing 100 Watts into all four channels at 2-Ohm. The P400-4 for cars and trucks is perfect for a 4-way full-range system or a 3-way system having a front stage with subwoofers on the rear channels.

The P400-4 punch amplifier includes:

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Discontinued
Overview

The P400-4 car amplifier is perfect for 4-way front-stage/rear-fill or 3-way front-stage/subwoofer systems. Simply drop a pair of component speakers on the front channels and subs on the rear and BOOM - you got "The PUNCH." With its flexible design, the P400-4 is an excellent amplifier choice for virtually any vehicle.

Longing for a subwoofer? Check out our collection of subwoofers here.

  • 12dB/octave Butterworth crossover
  • 2/4 channel input switch
  • MOSFET power supply
  • MOSFET output stage
  • 4 Gauge power/ground connectors
  • Audiophile grade speaker connections
  • Top Mounted LED Indicators
  • 1 Year Warranty
Technologies
CEA-2006 Compliant
CEA-2006 Compliant

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

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CEA-2006 Compliant
CEA-2006 Compliant

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.

DSM
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

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

DTM
DTM

Dynamic Thermal Management evenly distributes excess heat across entire amplifier heatsink.

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DTM
DTM

Dynamic Thermal Management evenly distributes excess heat across entire amplifier heatsink.

MEHSA<sup>3</sup>
MEHSA3

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

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MEHSA<sup>3</sup>
MEHSA3

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

NOMAD
NOMAD

NOMAD is a "real time" analog computer that protects your amplifier from shorting speaker wires and ...

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NOMAD
NOMAD

NOMAD is a "real time" analog computer that protects your amplifier from shorting speaker wires and dangerously low speaker impedances.

Punch EQ2
Punch EQ2

Onboard equalizer with up to +18dB @ 45Hz and/or up to +12dB boost at 12kHz.

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Punch EQ2
Punch EQ2

Onboard equalizer with up to +18dB @ 45Hz and/or up to +12dB boost at 12kHz.

Engineered In The USA
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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Engineered In The USA
Engineered In The USA

These Avatars are a personal signature from the Rockford Fosgate team member(s) who designed and engineered this fanatic product. This statement illustrates our commitment to being Designed and Engineered in the U.S.A.

TO-247 MOSFETs
TO-247 MOSFETs

(left-OLD | right-NEW)
Rockford Fosgate amps use custom TO-247 MOSFETs. These have 60% more ...

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TO-247 MOSFETs
TO-247 MOSFETs

(left-OLD | right-NEW)
Rockford Fosgate amps use custom TO-247 MOSFETs. These have 60% more metal tab area for more power capacity, lower impedance and improved heat dissipation over traditional TO-220 MOSFETs found in competitor amps.

TRANS&#149;<em>ana</em>
TRANS•ana

Trans•ana is a Class A/B topology that simplifies the signal path of the amplifier allowing the ...

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TRANS&#149;<em>ana</em>
TRANS•ana

Trans•ana is a Class A/B topology that simplifies the signal path of the amplifier allowing the signal to travel through the amplifier at a lower voltage. The result is greater reliability and exceptional sound quality.

Specifications
CEA-2006 Compliant
Number of Channels
4
Total Power
(Sum of Rated Power)
400 Watts RMS
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®)
Front Channels
86 Watts x 2 @ 4-Ohms 0° Res
144 Watts x 2 @ 2-Ohms 0° Res

Rear Channels
85 Watts x 2 @ 4-Ohms 0° Res
142 Watts x 2 @ 2-Ohms 0° Res
Bridgeable
Yes
Frequency Response
20Hz to 20kHz +/- 1.0dB
Input Sensitivity
Circuit Topology Class
Class A/B
Efficiency (average)
71% @ 4-Ohm
70% @ 2-Ohm
Total Harmonic Distortion (Thd+Noise)
Signal Input
Low level: 2 RCA pair
Signal Output
Tone Controls
Front Punch EQ2 Bass: 0dB to +18dB @ 45Hz and/or
Front Punch EQ2 Treble: 0dB to +12dB @ 12kHz
Rear Punch EQ2 Bass: 0dB to +18dB @ 45Hz and/or
Rear Punch EQ2 Treble: 0dB to +12dB @ 12kHz
Function depends upon LP/AP/HP switch position
Crossover Controls
Front High-Pass (HP): 50Hz-500Hz 12dB/octave Butterworth
Front Low-Pass (LP): 50-500Hz 12dB/octave Butterworth
Rear High-Pass (HP): 50Hz-500Hz 12dB/octave Butterworth
Rear Low-Pass (LP): 50-500Hz 12dB/octave Butterworth
Remote Controls
Optional PEQ Remote Punch EQ
(overrides built-in Punch EQ2 for rear channels only)
Visual Indicators
Power
Thermal
Protect
Power Wire Gauge
4 AWG
Power Input Connector
Block
Speaker Wire Gauge
8 AWG to 18 AWG
Speaker Output Connector
Screw terminal barrier strip
Cooling
Convection
Heatsink
Operating Voltage
Recommended Fuse
(Not Included)
Average Current Draw (13.8V Music)
Max. Current Draw (13.8V Sinewave)
Suggested Alternator
Dimensional Diagram
Dimensions (H x W x D)
2.25 x 7.625 x 13.02 (in)
5.71 x 19.37 x 33.07 (cm)
Shipping Weight
8.89 Lbs.
(4.03 Kg.)
Compatibility
Support

Return Authorization

Contact the Authorized Rockford Fosgate Dealer you purchased this product from. If you need further assistance, call 1-800-669-9899 for Rockford Customer Service. You must obtain an RA# (Return Authorization number) to return any product to Rockford Fosgate. You are responsible for shipment of product to Rockford.


View Process

Accessories Wiring Wizard

Available Wiring Diagrams

Please consult your amplifier owner's manual for lowest recommended impedance.





















Speaker Polarity

Your woofer may use one of the following to identify (+/-) terminals.

Positive +

Red Post

Purple (4Ω)

Red (8Ω)

Negative -

Black Post

No Dot

No Dot

Speaker Polarity

Your woofer may use one of the following to identify (+/-) terminals.

Positive +

Red Post

Purple (4Ω)

Red (8Ω)

Negative -

Black Post

No Dot

No Dot

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