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Rockford Fosgate P400X1 Punch 400 Watt Mono Amplifier

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SKU: P400X1
On Sale Now! 15% Off!

$599.00 $509.15

1 in stock

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Rockford Fosgate Punch 400 Watt Mono Amplifier: Specifically Designed for Medium to High-Powered Subwoofer Applications!

The Punch P400X1 is a mono amplifier capable of producing 400 Watts into a 2-Ohm load and is designed for medium to high-powered subwoofer applications. You can also use the P400X1 for multi-speaker center channel applications.

The Punch P400X1 mono amplifier is specifically designed for medium to high-powered subwoofer applications. It’s variable crossover and built-in Punch EQ allow for precise tuning of Bass frequencies, and its 2-Ohm mono stability is perfect for running up to four 4-Ohm DVC subwoofers. You can also add-on the PLC2 Remote Punch Level Control to control equalization from under the dash or center console. Sized to fit under any seat, you can hide this amplifier and have them guessing where the amp is.

Rockford Fosgate P400X1 Features:

  • 12dB/octave Butterworth crossover
  • Features C.L.E.A.N. Set-up
  • High level input capable with Auto Turn-On circuit
  • On-board Punch EQ with +18dB boost @ 45Hz
  • Optional remote Punch Level Control (PLC2) ready (w/ input clip indicator)
  • RCA pass-thru outputs
  • Short circuit protection
  • Over current protection
  • Cast aluminum heatsink
  • Muted turn on
  • Stealth top mounted control panel

Rockford Fosgate P400X1 Specs

Weight 4.3 kg
Model Name

Punch 400 Watt Mono Amplifier




Rockford Fosgate

Number of Channels


Total Power (Sum of Rated Power)

400 Watts

Rated Power (RMS Continuous Power)

250 Watts x 1 @ 4-Ohm, 400 Watts x 1 @ 2-Ohm

Dynamic Power (PVC/PowerCube®)

327 Watts x 1 @ 4-Ohms 0° Res, 563 Watts x 1 @ 2-Ohms 0° Res



Frequency Response

20Hz to 20kHz +/- 1.0dB

Input Sensitivity

150 mV – 12 V

Circuit Topology Class Class


Efficiency (average)

73% @ 4-Ohm

Total Harmonic Distortion (THD+Noise)

4-Ohm: <1.0%, 2-Ohm: <1.0%

Signal Input Hi/Low level

1 RCA pair

Signal Output Low Level

1 RCA Pair

Tone Controls Punch EQ2 Bass

0dB to +18dB @ 45Hz and/or Punch EQ2 Treble: 0dB to +12dB @ 12.5kHz, Function depends upon LP/AP/HP switch position

Crossover Controls High-Pass (HP)

50Hz-250Hz @ 12dB/octave Butterworth Low-Pass (LP): 50-250Hz 12dB/octave Butterworth All-Pass: Yes

Remote Controls Optional Punch Level Control (PLC2)


Visual Indicators Power/Protect/Thermal

LED Input Clip LED3 Output Clip LED1,2,3

LED Color Legend

BLUE: <0.5% THD
RED: 10%+ THD

Power Wire Gauge

8 AWG to 4 AWG

Speaker Wire Gauge

8 AWG to 18 AWG

Speaker Output Connector Captive


Cooling Convection


Operating Voltage

9 – 16 VDC

Average Current Draw (13.8V Music)

30 A

Max. Current Draw (13.8V Sinewave)

60 A

Suggested Alternator

75 A

Dimensions (H x W x D)

2.38 x 7.76 x 9.86 (in)
6.05 x 19.71 x 25.04 (cm)

Shipping Weight

9.5 Lbs. (4.30 Kg.)

Rockford Fosgate: Revolutionizing Audio in Automotive, Marine, and Motorcycle Industries

Rockford Fosgate, an iconic American brand, has carved a niche in the audio industry, particularly in automotive, marine, and motorcycle sectors. Known for their robust and high-quality audio products, Rockford Fosgate continues to innovate and provide exceptional sound systems that cater to audiophiles and enthusiasts who demand superior sound quality and durability in challenging environments.

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