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Rockford Fosgate P400-4 Amp

400w RMS 4-Channel Amp

Rockford Fosgate P400-4 Amp

Item No: P400-4

Delivery: 1-3 working days Warranty: 1 Year Availability: In Stock
14 Day Money Back Guarantee
Technical Help for Life

£399.99 £347.20


P400-4 400 Watt 4-Channel Amplifier

The P400-4 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.


Number of Channels




Rated Power continuous power


50W x 4 @ 4-Ohms RMS 100W x 4 @ 2-Ohms RMS 200W x 2 @ 4-Ohms bridged RMS


Total Power total sum of 'rated power'


400 Watts


Dynamic Power powercube measurement (info)


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








Efficiency (average)


71% @ 4-Ohm 70% @ 2-Ohm


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


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


Signal Input


Low level: 2 RCA pair


Signal Output




Power Input Connector




Power Wire Gauge




Speaker Output Connector


Screw terminal barrier strip


Speaker Wire Gauge


8 AWG to 18 AWG


Heat Sink Type


Cast aluminum






Remote Controls


Optional PEQ Remote Punch EQ (overrides built-in Punch EQ2 for rear channels only)


Visual Indicators


Power Thermal Protect


Circuit Topology Class


Class A/B


Frequency Response


20Hz to 20kHz +/- 1.0dB


Shipping Weight


8.89 Lbs. (4.03 Kg.)


Dimensions (HxWxL)


2.25 x 7.625 x 13.02 (in) 5.71 x 19.37 x 33.07 (cm)



12dB/octave crossover


2/4 channel switch


4 Gauge power/ground terminals


Audiophile grade speaker connections


MOSFET output stage


MOSFET power supply


Top Mounted LED Indicators


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