---
product_id: 1164824
title: "P400X4"
brand: "rockford fosgate"
price: "€ 816.04"
currency: EUR
in_stock: null
url: https://www.desertcart.es/products/1164824-p400x4
store_origin: ES
region: Spain
---

# 400W peak power punch 4-channel versatile output On-board Punch EQ +18dB boost P400X4

**Brand:** rockford fosgate
**Price:** € 816.04
**Availability:** ❌ Out of Stock

## Summary

> 🎵 Unleash the Punch: Amplify your drive, own the soundscape.

## Quick Answers

- **What is this?** P400X4 by rockford fosgate
- **How much does it cost?** € 816.04 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/1164824-p400x4)

## Best For

- rockford fosgate enthusiasts

## Why This Product

- Trusted rockford fosgate brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Tailored Sound Control:** Built-in Punch EQ and variable Butterworth crossovers let you fine-tune bass and mids for a concert-like experience.
- • **Rockford Fosgate Reliability:** Engineered with legendary build quality and backed by a 1-year warranty for peace of mind.
- • **Seamless Signal Compatibility:** RCA inputs accept both high and low-level signals—no signal converter needed, simplifying installation.
- • **Power Your Ride with Precision:** Delivers up to 400 watts RMS for crystal-clear, high-impact sound in any vehicle setup.
- • **Flexible Channel Configurations:** Supports 4-channel, bridged 2-channel, and multiple impedance options to fit your custom audio system.

## Overview

The Rockford Fosgate P400X4 is a compact yet powerful 400-watt 4-channel amplifier designed for versatile vehicle audio setups. Featuring Class A/B topology, flexible channel bridging, and advanced onboard EQ controls, it delivers crisp, dynamic sound with easy installation. Perfect for audiophiles seeking professional-grade performance and reliability on the road.

## Description

P400X4 Punch 400-Watt 4-Channel Amplifier

## Features

- The Punch P400X4 is a 400 watt 4-channel amplifier (2.38” x 7.76” x 11.03”) is perfect for a 4-way full-range system or a 3-way system having a front stage with subwoofers on the rear channels
- Versatile multi-channel design is a perfect choice for virtually any vehicle (RMS Power Output: 50 Watts x 4 @ 4-Ohm OR 100 Watts x 4 @ 2-Ohm OR 200 Watts x 2 @ 4-Ohm Bridged)
- RCA inputs can accept both Hi and Low level audio signals without the need of a signal converter
- Featuring Class A/B topology, RCA pass-thru outputs, on-board Punch EQ with +18dB boost @ 45Hz, variable 12 dB/Oct Butterworth crossovers, and C.L.E.A.N. Set-up
- Famous Rockford Fosgate build quality with a full 1-year warranty

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item dimensions L x W x H | 11 x 7.8 x 2.4 inches |
| Voltage | 12 Volts |
| Manufacturer | Rockford Fosgate |
| Mounting Type | Car Mount |
| Brand | Rockford Fosgate |
| Number of Channels | 4 |
| Output Power | 400 Watts |
| Global Trade Identification Number | 00780687342272 |
| UPC | 780687342272 739197278595 796327931423 |
| Item Weight | 6.93 pounds |
| Product Dimensions | 11 x 7.8 x 2.4 inches |
| Item model number | P400X4 |
| Batteries | 1 12V batteries required. |
| Is Discontinued By Manufacturer | No |
| Wireless Remote | No |
| Warranty | 1 year |
| Height (inches) | 9 inches |
| Width (inches) | 5 inches |
| Weight | 11.3 Pounds |

## Product Details

- **Item dimensions L x W x H:** 11 x 7.8 x 2.4 inches
- **Voltage:** 12 Volts
- **Manufacturer:** Rockford Fosgate
- **Mounting Type:** Car Mount
- **Brand:** Rockford Fosgate

## Images

![P400X4 - Image 1](https://m.media-amazon.com/images/I/71jkz3vPWDL.jpg)
![P400X4 - Image 2](https://m.media-amazon.com/images/I/717goJTbERL.jpg)
![P400X4 - Image 3](https://m.media-amazon.com/images/I/71G10jljS2L.jpg)
![P400X4 - Image 4](https://m.media-amazon.com/images/I/71cZYY74Z+L.jpg)
![P400X4 - Image 5](https://m.media-amazon.com/images/I/61ppoGEWcHL.jpg)

## Available Options

This product comes in different **Product Packaging, Style** options.

## Questions & Answers

**Q: Will this amp push two Rocksford fosgate 4 ohm 12" subs**
A: For 2 12" R2D4's I'd suggest going for the R1200.1D. Should be more than enough to power them. I'm using it for 2 10" R2D2's and a single 12" R2D4 all wired up together at 1 ohm.

**Q: With the P600x4 . I want to power my 6.5 components and a set of 6x9's all of which are about 100 watts RMS each. What is the RMS  @ 4 ohms on amp**
A: I would look at other amps. One of these doesn't have enough power for my doors. Their 2 channel does a decent job on 4 6x9. Their anticlip feature leads to amp cutting in and out annoying feature.

**Q: Is this amp 2ohm stable?**
A: Yes sir.. it is 2ohm stable. I'm running a single 10" 4ohm DVC bridged to the rear channel with (2 0hm) 6x9s running off the front channel in the rear deck and it sounds great. As long as you dial it in as per the C.L.E.A.N. instructions you'll be really happy with this RF amp.

**Q: What is the true rms power on the 600x4? I know these amps are under rated**
A: The short answer is above 600 rms total. Every amp comes with a birth sheet that shows the results of a Amp dyno test performed on the amp. Mine was 191 rms per channel @ 2 ohms which translates to 764 rms total. Every amp sold by Rockford is underrated so expect to see a larger rms rating than advertised. I've seen birth sheets for this specific model ranging from 750 rms up to the high 900 rms range.

## Frequently Bought Together

- Rockford Fosgate P400X4 Punch 400-Watt 4-Channel Amplifier
- Rockford RFK4X 4 AWG Complete Amplifier Install Kit
- Rockford Fosgate P500X1BD Punch 500 Watt Class-bd Mono Amplifier

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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-01-22*