The P400X4 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 P400X4 is an excellent amplifier choice for virtually any vehicle.

  • High level input capable with Auto Turn-On circuit
  • Features C.L.E.A.N. Set-up
  • 12dB/octave Butterworth crossover
  • On-board Punch EQ with +18dB boost @ 45Hz
  • Muted turn on
  • Stealth top mounted control panel
  • Cast aluminum heatsink
  • Short circuit protection
  • Over current protection


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®)
82 Watts x 4 @ 4-Ohm 
137 Watts x 4 @ 2-Ohm 
266 Watts x 2 @ 4-Ohm Bridged
Bridgeable
Yes
Frequency Response
20Hz to 20kHz +/- 1.0dB
Input Sensitivity
150 mV - 12 V
Circuit Topology Class
Class A/B
Efficiency (average)
67% @ 4-Ohm
Total Harmonic Distortion (THD+Noise)
4-Ohm: <1.0% 
2-Ohm: <1.0%
Signal Input
Hi/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 @ 12.5kHz 
Rear Punch EQ2 Bass: 0dB to +18dB @ 45Hz and/or 
Rear Punch EQ2 Treble: 0dB to +12dB @ 12.5kHz 
Function depends upon LP/AP/HP switch position
Crossover Controls
Front High-Pass/Low-Pass (HP/LP): 50Hz-250Hz @ 12dB/octave Butterworth 
Rear High-Pass/Low-Pass (HP/LP): 50Hz-250Hz @ 12dB/octave Butterworth 
All-Pass: Yes
Remote Controls
-
Visual Indicators
Power/Protect/Thermal LED 
Input Clip LED3 
Output Clip LED1,2,3 

LED Color Legend: 
1BLUE: <0.5% THD 
2VIOLET: 1% THD 
3RED: 10%+ THD
Power Wire Gauge
8 AWG to 4 AWG
Power Input Connector
Captive C-Clamp
Speaker Wire Gauge
8 AWG to 18 AWG
Speaker Output Connector
Captive C-Clamp
Cooling
Convection
Heatsink
Operating Voltage
9 - 16 VDC
Recommended Fuse 
(not included)
60 A
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 11.03 (in) 
6.05 x 19.71 x 28.02 (cm)