Rockford Fosgate Punch Multi-Channel Amplifier

by Rockford Fosgate

Product Details

User's Guide [4.03mb PDF]

• Product Dimensions: 8.1 x 8.4 x 13.5 inches
• Shipping Weight: 11 pounds (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• ASIN: B001AO4NUI
• Item model number: P400-4
• Average Customer Review: 5.0 out of 5 stars  See all reviews (6 customer reviews)
• Amazon Best Sellers Rank: #8,233 in Electronics (See Top 100 in Electronics)

Product Description

Amazon.com Product Description

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.

Rockford Fosgate Punch Series Amplification For over 25 years, Punch amplifiers have set the standard in the car audio amplifier industry and they continue to do so today. It's the reason that they have become the most popular amplifiers in the world. Each of the Punch family amplifiers reproduce sonic perfection along with impressive power in a compact chassis.

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Perfect for 4-way front-stage/rear-fill or 3-way front-stage/subwoofer systems. Click to enlarge.

All connections are recessed into the amplifier's chassis and located on the bottom edge of the P400-4, for a clean, uncluttered install that looks great in any car. Click to enlarge.

P400-4 Features

Features:

• 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

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.

Differential Inputs
Differential input circuitry measures the voltage of both the (+) and (-) input signal. The circuitry subtracts the voltage common to both conductors (noise) resulting in only the clean signal. This allows only clean signal to enter the amplifier.

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

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

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

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

Punch EQ2
Onboard equalizer with up to +18dB @ 35Hz and/or up to +12dB boost at 12kHz.

TO-247 MOSFETs
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·ana
Trans·ana 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.

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P400-4 Specifications

Number of Channels:	4
Rated Power:	50W x 4 @ 4-Ohms RMS 100W x 4 @ 2-Ohms RMS 200W x 2 @ 4-Ohms bridged RMS
Total Power:	400 Watts
Dynamic Power:	Front Channels 86 Watts x 2 @ 4-Ohms 0 degrees Res 144 Watts x 2 @ 2-Ohms 0 degrees Res Rear Channels 85 Watts x 2 @ 4-Ohms 0 degrees Res 142 Watts x 2 @ 2-Ohms 0 degrees Res
Bridgeable:	Yes
Efficiency (average):	71% @ 4-Ohm 70% @ 2-Ohm
Crossover Controls:	Front High-Pass (HP): 50-500Hz 24dB/octave Butterworth Front Low-Pass (LP): 50-500Hz 24dB/octave Butterworth Rear High-Pass (HP): 50-500Hz 24dB/octave Butterworth Rear Low-Pass (LP): 50-500Hz 24dB/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:	n/a
Power Input Connector:	Block
Power Wire Gauge:	4 AWG
Speaker Output Connector:	Screw terminal barrier strip
Speaker Wire Gauge:	8 AWG to 18 AWG
Heat Sink Type:	Cast aluminum
Cooling:	Convection
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 +/- 1dB
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)

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Thirty Years of Rockford Fosgate

Rockford Fosgate products have been designed and engineered in Tempe, Arizona since the beginning. Rockford's 30 year reputation is grounded in engineering and manufacturing some of the finest audio products in the world. The company's no-compromise approach has yielded patented iconic products such as the Punch EQ, Punch 45 amplifier and the 3Sixty integrated signal processor. Today, Rockford's new products push the performance envelope even further. Each new product is a step forward--they sound bigger, they play louder, and run longer. Rockford never settles for "good enough."

The 2010 product line represents the company's core philosophy. Rockfords new amplifiers, speakers and subwoofers have raised the bar on the competition.

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What's in the Box

Rockford Fosgate Punch P400-4 400-Watt Stereo Amplifier, User's Manual

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More Amplifier Options From Rockford Fosgate

If you need more features, step up to the Power Series T400-4.

On a Tighter Budget? Rockford's also got you covered. Consider the Prime Series R300-4.

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Rockford Fosgate Punch Series Power Amplifiers

Rockford Fosgate Punch P200-2 200-Watt Stereo Amplifier	Rockford Fosgate Punch P300-1 300-Watt Mono Amplifer	Rockford Fosgate Punch P300-2 300-Watt Stereo Amplifer	Rockford Fosgate Punch P400-1 400 Watt Mono Amplifier
Rockford Fosgate Punch P400-2 400-Watt Stereo Amplifier	Rockford Fosgate Punch P400-4 400-Watt Multi Channel Amplifer	Rockford Fosgate Punch P500-1BD 500-Watt Mono Amplifer	Rockford Fosgate Punch P500-2 500-Watt Stereo Amplifer
Rockford Fosgate Punch P500-4 500 Watt Multi Channel Amplifier	Rockford Fosgate Punch P700-1BD 700 Watt Mono Amplifier	Rockford Fosgate Punch P1000-1BD 1000-Watt Mono Amplifer

Product Description

Rockford Fosgate 400 Watt Multi-channel amplifer with on-board adjustable crossover, gain control, and Patented Punch EQ. Amplifier features DTM Thermal management circuitry and MOSFET technology for clean performance that does not shut down. CEA Certified RMS Power Rating 150 watts x1 @ 4 Ohms, 300 watts x1 @ 2 Ohms. Visit www.RockfordFosgate.com 24 hours a day for technical support or call [phone] M-F 7 am to 5 pm MST.

See all Product Description

Customer Reviews

Most Helpful Customer Reviews

5 of 5 people found the following review helpful:

5.0 out of 5 stars The usual excellent Rockford Fosgate quality, December 18, 2010

By 

Scott Carpenter - See all my reviews

This review is from: Rockford Fosgate Punch Multi-Channel Amplifier (Electronics)

Rockford consistently underrates their amplifiers. This was installed as part of a total system refresh. Along with this came the JVC KW-XR810 head unit and the Rockford Fosgate 12" powered subwoofer. it went into a 2003 Toypta RAV4, in place of an old (2 years old) Pioneer head unit. I had replaced the stock speakers with Infinity Reference 6.5" speakers in the front and rear. The sound was boomy and muddy, and I didn't think it could get much better without doing some serious sound damping and tuning. I was very wrong.
This system has transformed my Toyota. The Infinity speakers have come alive. The highs are crisp and precise, the mids are nicely present but not overwhelming, and the lows (I turned on the high pass filter to let the subwoofer do the job a 6.5" speaker just can't) are solid. The subwoofer isn't overwhelming, although it could be. I adjusted the response to be flat, without the subwoofer drowning out everything else. I've played everything from Bach to Dirty Vegas to Nine Inch Nails. It sounds amazing. Even before I had the subwoofer hooked up, it sounded amazing, and that just made it better.
I also have it connected to an ancient Kenwood Sirius tuner that I got a lifetime subscription on about 8 years ago, and that also sounds great - just not as good as a new CD.
I made up errands to run today, just so I could spend more time in my car. It sounds that good. I knew my old head unit was under powered for the speakers, but I had no idea that putting an excellent amp in there could change things this much.

5 of 5 people found the following review helpful:

5.0 out of 5 stars rockford fosgate P4004 4 channel amp., October 17, 2007

By 

William Dyer "Big Bill" (Lakewood, CA. United States) - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

this is a excellent amp. rockford test's every amp they sell and record the numbers then put them in the box with the amp. The P4004 is rated at 50 watts x 4 at 4 ohms, the one i recieved was shown to put out 93 watts x 4 at 4 ohms. this amp is extremely quiet, you hear nothing when in between songs. the P4004 is combined with an Alpine CDA 9885 reciever, a beautiful combo. the rockford really impressed me, I highly recomend it.

2 of 2 people found the following review helpful:

5.0 out of 5 stars the best!, April 25, 2009

By 

Paul G. Gennaro "pj" (hawaii) - See all my reviews
(REAL NAME)   

This review is from: Rockford Fosgate Punch Multi-Channel Amplifier (Electronics)

ill tell you right now this amp is by far the single best amp i ever purchased for my highs!..its crisp and clean and its powering my rockford power series components!..its so loud and clear you can hear the highs alone a block away..i also got the p1000bd 2 channel powering my 2 rockford p3 12s! i got rockford in the whole car and once again rockford always blows its competitors outta the water!!!