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Rockford Fosgate Punch P400X1

400W RMS Punch Series Monoblock Class AB Car Power Amplifier

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Rockford Fosgate Punch P400X1

400W RMS Punch Series Monoblock Class AB Car Power Amplifier

$262.49

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Belva 1.0 Farad Capacitor + Amp Kit

BB1D 1.0 Farad Capacitor + BAK42 Complete 4 Gauge Amplifier Wiring Kit

$39.99

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Bass Remote

A bass remote made specifically for the this amplifier.

$21.99

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AudioControl Epicenter-InDash

If you want the best bass possible and a way to measure how loud your system is playing

$249.99

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10% Off an XS Power 12-Volt Deep Cycle Battery with Purchase

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XS Power XP750-CK

$149.99

Special Price $134.99 ($149.99 if purchased separately)

XS Power XP750-CK

• Includes a Secondary Battery and All Necessary Wiring
• Thick but Flexible CCA Wiring • Complies with American Wire Gauge Standards

Get 15% off the Punch Level Control Bass Knob with Purchase!

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Rockford Fosgate Remote Punch Level Control (PLC2)

$21.99

Special Price $18.69 ($21.99 if purchased separately)

Rockford Fosgate Remote Punch Level Control (PLC2)

• Remote wired level control
• Dual function LED (power/clipping)
• Controls level when crossover set to LP (Low-Pass)
• Includes bass knob, cable, mounting clip, mounting screws

Get 20% off the Speaker to RCA Adapter with Purchase!

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Rockford Fosgate Speaker to RCA Adapter (RFIF2SW)

$7.98

Special Price $6.38 ($7.98 if purchased separately)

Rockford Fosgate Speaker to RCA Adapter (RFIF2SW)

• Speaker Line High Level Input To Female RCA Output Adapter
• Converts Factory (OEM) High Level Speaker Outputs into RCA Outputs for Use with an Aftermarket Amp

Save 5% on an RF Amp Kit and get an Extended Warranty!

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Rockford Fosgate RFK4X

• Complete 4 Gauge Amplifier Installation Kit with RCA Interconnect Cables
• 100% Pure Crystal Oxygen-Free Copper (PC-OFC)
• FULL Spec Cable Meets or Exceeds AWG (American Wire Gauge) Requirements

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Rockford Fosgate 2-Channel/Mono Amp Wiring Kit (RFK4I)

• 4 Gauge Power and Signal Installation Kit
• 100% Pure Crystal-Oxygen Free Copper (PC-OFC)
• FULL Spec Cable Meets or Exceeds AWG (American Wire Gauge) Requirements
• Includes Appropriate Wire Termination Hardware

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Rockford Fosgate RFK4D

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• FULL Spec Cable Meets or Exceeds AWG (American Wire Gauge) Requirements

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Rockford Fosgate RFK1D

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• meets or exceeds AWG (American Wire Gauge) requirements

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• 8 Gauge Amplifier Installation Kit
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• CEA-2015 Compliant

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• CEA-2015 Compliant

Get 10% off a RF License Plate & Deadskin Combo w/ Purchase!

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Rockford Fosgate RFDS-PLATE Sound Dampening License Plate Kit

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Rockford Fosgate RFDS-PLATE Sound Dampening License Plate Kit

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(Offer 1 of 11)

Combined Total Price

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Rockford Fosgate Audio Store

General Features


 

 

 

 
  • Punch Series Monoblock Class AB Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 250 watts x 1 chan.
    • 2 ohms: 400 watts x 1 chan.
    • 1 ohms: ----------N/A-----------
  • CEA-2006 compliant amplifier
  • Features C.L.E.A.N. Set-up with 10-step set-up procedure
    w/ input/output clip detection and indicator LEDs
  • MOSFET power supply
  • Muted turn on
  • Cast aluminum heatsink
  • 12dB/octave Butterworth crossover
  • Stealth top mounted control panel
  • LED power, thermal, and protect indicators
  • Nickel-plated captive C-clamp terminals
  • Ultra efficient Class BD circuitry to maximize amplifier power efficiency
  • On-board differential inputs eliminates noise picked up by the signal cable
  • Optional remote Punch Level Control (PLC2) ready (w/ input clip indicator)
  • High level input capable with Auto Turn-On circuit (RFIF2SW required, sold separately)
  • MESHA3 reduces MOSFET temperatures, lowers distortion, increases durability, and prolongs the output device life span
  • Built in NOMAD is a "real time" analog computer that protects your amplifier from shorting speaker wires and dangerously low speaker impedances
  • Cast aluminum convection heatsink with DTM (Dynamic Thermal Management) evenly distributes excess heat across entire amplifier heatsink to efficiently keep the amplifier temperatures low
  • DSM (Discrete Surface Mounted Components) utilize 1% tight-tolerances improving efficiency of the circuit and lowers operating temperature and potential for noise - similar to circuit boards designed by aerospace manufacturers
  • Input sensitivity: 150mV - 12V
  • On-board Punch EQ
    • Bass: 0dB to +18dB boost @ 45Hz.
    • Treble: 0dB to +12dB boost @ 12.5kHz .
    • Function depends upon LP/AP/HP switch position
  • Selectable crossover modes: LP / AP / HP
  • Variable crossover filter: 50-250Hz
  • Frequency response: 20 - 20,000Hz
  • Total Harmonic Distortion: <1.0%
  • Dimensions: 9-7/8"L x 7-3/4"W x 2-3/8"H
  • 8 AWG to 18 AWG speaker wire output terminals
  • 4 - 8 gauge power and ground wiring is recommended for installation. Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier. Click Here for our contact information.
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Product History:

Rockford Fosgate P400X1 thumbnail
(newest, current model)
Rockford Fosgate P400-1 thumbnail
(previous model, replaced by Rockford Fosgate Punch P400X1)

Power Specifications - Subwoofer Channel

RMS Power @ 4 ohms
The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far. If the final impedance of your speaker(s) or subwoofer(s) equals 4 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound. The 5th channel on these particular amplifiers are usually dedicated for driving subwoofers.
250 watts x 1 channels
RMS Power @ 2 ohms
The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far. If the final impedance of your speaker(s) or subwoofer(s) equals 2 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound. The 5th channel on these particular amplifiers are usually dedicated for driving subwoofers.
400 watts x 1 channels

Amplifier Specifications

Amplifier Series
This designates the series of the amplifier. Many amps are available in a litany of different wattage and channel configurations, but maintain consistent features throughout the product line.
Punch (Rockford Fosgate)
Amplifier Class

An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.

AB
Number of Channels
Each channel on an amplifier will power one speaker using a positive and negative cable. There are various types of amplifiers, each designed to power a certain number of speakers. Monoblock amplifiers, also known as single channel, are designed to power one or more subwoofers. These amplifiers often have very high power ratings. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. 2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. Occasionally you might see a 5 or 6-channel amplifier that can power speakers and subwoofers at the same time. The most common setup is a monoblock amp to run subwoofers and a 4-channel amp to run door speakers. Check out our Knowledge Base for more information.
1 - Mono
Total RMS Power Output
Total RMS power is measured by multiplying RMS power per channel by the number of channels, and is calculated at the lowest level of operating impedance.

RMS power is the amount of continuous power, measured in watts, that an amplifier produces is called RMS power. The higher the RMS figure, the louder and cleaner your music sounds.

The RMS output figure is much more accurate than the peak rating when comparing products.

400 watts
Maximum Input Gauge Size
This is the largest gauge wire that will fit into the power and ground terminals of this device. The lower the gauge number, the thicker the wire is. For example, a 4 gauge wire is thicker than an 8 gauge wire and thus has higher current carrying capacity. Always do your best to get this size wire to reduce the risk of damage to your components.
4 AWG
Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
2 ohms
Minimum Impedance Bridged
The lowest impedance the amplifier will handle when it is bridged.
Not Bridgeable
THD at Rated RMS Power
The amount of change in harmonic content of the signal as it is amplified. A lower figure indicates less change and a more accurate amp. THD below 0.10% is inaudible.
<1.00%
Speaker Level Inputs
Speaker level inputs are commonly referred to as high-level inputs and vice versa. This input type allows you to get your audio signal directly from the speaker wire in your vehicle, instead of using RCA cables. The advantage of this is factory integration, as most stock radios do not have RCA outputs to run amplifiers.
Optional (Requires Accessory Adapter)
Preamp Outputs
Many amplifiers are equipped with RCA preamp outputs which pass the original music signal from the source to additional amplifiers. This is known as daisy chaining because the source connects to the first amp, and the first amp connects to the second amp, etc. The advantage to daisy chaining is you only need one 2-channel RCA cable to transfer the signal from the head-unit to the amplifier, and then one additional cable for each amp being daisy chained.
1 pair
Built-in Crossover

A crossover is a type of filtering system that permits only certain frequencies to play. A Low-Pass (LP) crossover allows only frequencies below its setting to get through which is good in the case of some subwoofers. A High-Pass(HP) filter allows frequencies above its setting to pass through, this is normally used on speakers.

When a crossover is set to FULL it means no filtering is added and the full frequency spectrum is allowed through the amplifier. Filtering is important because feeding a speaker frequencies it cannot reproduce effectively creates distortion.

Low-Pass (LP)
High-Pass (HP)
Full (AP)
High-Pass Crossover Frequency
The high-pass crossover frequency can be a fixed crossover point or a variable crossover range. A variable high-pass crossover allows you to select a specific crossover point which allows frequencies above the set crossover point to pass, while making frequencies below the set point gently or harshly roll-off, depending on the steepness of the slope.

The steepness of the roll-off slope is measured in dB/octave and refers to the rate of attenuation (lowering of volume) outside their pass bands.

50 - 250 Hz
Low-Pass Crossover Frequency
The low-pass crossover frequency is typically used for subwoofers. It can be a fixed crossover point or a variable crossover range. A variable low-pass crossover allows you to select a specific crossover point which allows frequencies below the set crossover point to pass, while making frequencies above the set point gently or harshly roll-off, depending on the steepness of the slope.

The steepness of the roll-off slope is measured in dB/octave and refers to the rate of attenuation (lowering of volume) outside their pass bands.

50 - 250 Hz
Signal-to-Noise Ratio
This spec compares the strength of the signal to the level of background noise. A higher value indicates less background noise.
105 dB
Bass Boost
The objective of the bass boost is to get more kick out of your subwoofer. It is a circuit that emphasizes the lower frequencies at a given point. The bass boost should always be set first before setting the gain. This feature is known for destroying subwoofers and is commonly used incorrectly, so be cautious.
0 - 18 dB
Bass/Gain Remote
If the amp comes with a bass/gain remote you will be able to control the level of your bass from your dashboard. Typically bass remotes also include a 16-20 ft. wire for installation.
Optional (Accessory required and sold separately)
Fan Cooled
A great feature to have if an amp generates a large amount of heat. Cooling fans can help regulate the temperature to prevent the amp from overheating (burning).
No
Fuse Rating
The amperage and the number of fuse(s) an amp requires.
60A Fuse Recommended, Not Included
Strappable
Some amplifiers can be "strapped" together in order to increase the output of a single audio channel. These amplifiers feature RCA preamp outputs, allowing you to pass the signal directly from one amp to the other to ensure consistency.
No
CEA-2006 Compliant
Amplifiers that have been tested to meet specific standards. When a car amplifier meets these standards, you can be sure that it will be able to produce the amount of power specified by the official CEA-2006 rating. Usually, these rating consist of the following items:
  • RMS Power
  • Signal-to-Noise Ratio

This rating applies to both external car amplifiers, as well as the amplifiers inside of in-dash stereos.

Yes

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
100%
4 Star
0%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
5.0
Value
4.5
Features
5.0
Design
5.0
Usability
5.0
Maurice

Phoenix, AZ

Overall
Durability
Value
Features
Design
Usability
Great buy packs a punch!

February 26, 2014

I have this running at 2 ohms pushing a p2 12. It hits hard, very easy to adjust.

22 of 26 found this helpful

Was this review helpful to you?

Ronald

Kingman, AZ

Overall
Durability
Value
Features
Design
Usability
Great Product

December 11, 2014

Does everything I expected, just had installed in my car it really rocks.

20 of 25 found this helpful

Was this review helpful to you?

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Two fuses per order. High quality 200 Amp ANL Fuses

Your Price $2.99

2 Pack of 300 Amp Nickel-Plated ANL Fuse

Two fuses per order. High quality 300 Amp ANL Fuses

Your Price $2.99

Gauge Reducer, 4 Gauge Input to 8 Gauge Pin

Great for amplifiers that do not accept a large gauge power wire

Your Price $7.95

Gauge Reducer, 1/0 Gauge Input to 4 Gauge Pin

Great for amplifiers that do not accept large gauge power wire

Your Price $6.95

XIX2025 Strapping RCA

0.25 Meter (0.86 ft) Hyper-Flex RCA cable w/ Serpentine-Cut Nickel Plated Connectors

Your Price $9.99

Browse 2 questions and 2 answers
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Why did you choose this?
Sonic Electronix Store
I choose this Amp because I have had such a great experience with the punch series amps in the past. And I had heard great things about this amp I thought I. Try it since I was in the market for one any how.
Ernesto B on Aug 7, 2015
Will this work good with a single Rockford Fosgate R2D4-10 speaker??
A shopper on Oct 14, 2014
Best Answer: Hello,

No. The Rockford Fosgate R2D4-10 is a DUAL-4ohm subwoofer; This means you can either wire up to 8ohms or down to 2ohms. Both of which are not a very practical figure for the Rockford Fosgate R2D4-10. A better match will be the Rockford Fosgate P300X1.

Rockford Fosgate P300X1
http://www.sonicelectronix.com/item_67771_Rockford-Fosgate-P300X1.html
Reply · Report · Customer SStaff on Oct 14, 2014
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Product Summary

Manufacturer

Model Number

P400X1

UPC

780687332464

Weight

8.50lbs

Internal SKU

p400x1

Internal Product ID

67772

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Rockford Fosgate Punch P400X1

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