The Punch P400X4 is a 4-channel amplifier producing 100 Watts into all four channels at 2-Ohm. The P400X4 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 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
1 Year Warranty

CEA-2006 Compliant

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

Number of Channels

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 LED^1,2,3

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

Dimensional Diagram

Dimensions (H x W x D)

2.38 x 7.76 x 11.03 (in)
6.05 x 19.71 x 28.02 (cm)

Shipping Weight

10.8 Lbs. (4.89 Kg.)

ROCKFORD FOSGATE

ROCKFORD FOSGATE Punch 400 Watt 4-Channel Amplifier P400X4