---
product_id: 254582125
title: "A U D I O Compact Full-Range Rms Mosfet 4 Channel Car Amplifier (SK-M4004D,400W)"
brand: "skar audio"
price: "€ 409.00"
currency: EUR
in_stock: true
url: https://www.desertcart.es/products/254582125-a-u-d-i-o-compact-full-range-rms-mosfet
store_origin: ES
region: Spain
---

# 400W peak power output 4 full-range channels Adjustable crossover controls A U D I O Compact Full-Range Rms Mosfet 4 Channel Car Amplifier (SK-M4004D,400W)

**Brand:** skar audio
**Price:** € 409.00
**Availability:** ✅ In Stock

## Summary

> 🎵 Drive Your Sound, Own the Road!

## Quick Answers

- **What is this?** A U D I O Compact Full-Range Rms Mosfet 4 Channel Car Amplifier (SK-M4004D,400W) by skar audio
- **How much does it cost?** € 409.00 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/254582125-a-u-d-i-o-compact-full-range-rms-mosfet)

## Best For

- skar audio enthusiasts

## Why This Product

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

## Key Features

- • **Wide Frequency Range:** Experience deep bass and crisp highs from 10Hz to 40kHz.
- • **Efficient MOSFET Tech:** Class D amplifier design ensures powerful output with minimal heat and energy loss.
- • **Sleek & Ultra-Compact:** Fits seamlessly into any car setup without sacrificing space or style.
- • **Precision Sound Control:** Customizable HPF, LPF, and full-range crossover settings for tailored audio.
- • **Power-Packed Performance:** Delivers 140W RMS per channel at 2Ω for crystal-clear, high-impact sound.

## Overview

The A U D I O SK-M4004D is a compact, MOSFET-based 4-channel Class D car amplifier delivering up to 400W total power. It offers 140W RMS per channel at 2 ohms and 100W RMS at 4 ohms, with adjustable crossover controls and a wide frequency response from 10Hz to 40kHz, making it perfect for audiophiles seeking powerful, customizable in-car sound.

## Description

A U D I O Compact Full-Range Rms Mosfet 4 Channel Car Amplifier (SK-M4004D,400W)

## Features

- Ultra Compact MOSFET Full-Range 4-Channel Class D Car Amplifier
- RMS Power at 2 Ohms: 140 Watts x 4 Channels (14.4v)
- RMS Power at 4Ohms: 100 Watts x 4 Channels (14.4v)
- Crossover Controls: HPF / Full-Range / LPF | Frequency Response: 10Hz - 40kHz

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item dimensions L x W x H | 7.9 x 4.64 x 1.65 inches |
| Voltage | 14.4 Volts |
| Manufacturer | Skar Audio |
| Maximum Supply Voltage | 14.4 Volts |
| Minimum Supply Voltage | 14 Volts (DC) |
| Mounting Type | Surface Mount |
| Brand | Skar Audio |
| Number of Channels | 4 |
| Output Power | 400 Watts |
| Material | Mosfet |
| Global Trade Identification Number | 00739189979165 |
| UPC | 739189979165 |
| Item Weight | 3.74 pounds |
| Product Dimensions | 7.9 x 4.64 x 1.65 inches |
| Item model number | SK-M4004D |
| Is Discontinued By Manufacturer | No |
| Warranty | 2 year limited warranty |

## Product Details

- **Item dimensions L x W x H:** 20.1 x 11.8 x 4.2 centimeters
- **Voltage:** 14.4 Volts
- **Manufacturer:** Skar Audio
- **Maximum supply voltage:** 14.4 Volts
- **Minimum supply voltage:** 14 Volts (DC)

## Images

![A U D I O Compact Full-Range Rms Mosfet 4 Channel Car Amplifier (SK-M4004D,400W) - Image 1](https://m.media-amazon.com/images/I/61npvuKc0ML.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Can u run 8  speakers on this?**
A: Yes you can. Two speakers per channel in parallel but make sure that the impedence of each speaker is 4 ohms or more because the minimum impedence that this amp can work in a stable condition is 2 ohms. Also keep in mind that each speaker will get around 100-115 watts.

**Q: Can I use this amp to run my subs and tweets since it a four channel amp**
A: I wouldn't recommend it

**Q: I have ix 8 d2 sub, what amp should I get for it?**
A: You can run a Skar RP 350.1

**Q: Can i hook up tweeters, two front 90w rms and two 45w rms speakers to this?**
A: I have tweeters on mine with 2 6.5s running in HPF.

## Frequently Bought Together

- Skar Audio SK-M4004D Compact Full-Range Class D 4 Channel Car Amplifier, 400W
- Skar Audio 4 Gauge OFC Complete Amplifier Installation Wiring Kit, SKAR4ANL-OFC
- Skar Audio RP-1200.1D Monoblock Class D MOSFET Amplifier with Remote Subwoofer Level Control, 1200W

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**Shop now:** [https://www.desertcart.es/products/254582125-a-u-d-i-o-compact-full-range-rms-mosfet](https://www.desertcart.es/products/254582125-a-u-d-i-o-compact-full-range-rms-mosfet)

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