---
product_id: 504596527
title: "Skar Audio A U D I O Compact Full-Range Rms Mosfet 4 Channel Car Amplifier (SK-M4004D,400W)"
brand: "skar audio"
price: "B/.824"
currency: PAB
in_stock: true
reviews_count: 5
category: "Skar Audio"
url: https://www.desertcart.com.pa/products/504596527-skar-audio-a-u-d-i-o-compact-full-range
store_origin: PA
region: Panama
---

# 500W RMS @ 1Ω power punch Ultra-compact 7.9in x 4.6in x 1.7in Wide 15Hz-270Hz frequency range Skar Audio A U D I O Compact Full-Range Rms Mosfet 4 Channel Car Amplifier (SK-M4004D,400W)

**Brand:** skar audio
**Price:** B/.824
**Availability:** ✅ In Stock

## Summary

> 🎵 Compact Power, Massive Impact – Own the Bass Revolution!

## Quick Answers

- **What is this?** Skar Audio 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?** B/.824 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/504596527-skar-audio-a-u-d-i-o-compact-full-range)

## 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

- • **Efficient & Reliable:** Class D MOSFET design ensures high efficiency and consistent performance
- • **Seamless Integration:** High-level input connections for versatile installation, no RCA needed
- • **Precision Sound Control:** User-friendly gain, subsonic, and low-pass filters for tailored bass
- • **Powerhouse in a Miniature:** Delivers a massive 500W RMS at 1 Ohm without hogging space
- • **Robust Build & Connectivity:** Durable metal chassis with 8 gauge power and ground terminals

## Overview

The Skar Audio SK-M5001D is a compact Class D monoblock amplifier delivering 500 watts RMS at 1 Ohm, engineered with a high-speed MOSFET power supply for efficient, powerful bass performance. Its ultra-compact size fits tight spaces without compromising sound quality, featuring wide frequency response and versatile high-level inputs. Ideal for professionals seeking a reliable, space-saving amplifier with precise bass control.

## Description

The skar audio SK-M4004D full range class d four channel amplifier is part of the new mini amplifier series product lineup from skar audio. The sk-m4004d was engineered to be compact, but provide the power and reliability expected out of larger amplifiers. Featuring a high speed mosfet power supply, and an efficient class d design, this amplifier is powerful, reliable, and extremely versatile. The sk-m4004d makes for a great amplifier in applications where space is limited but power cannot be sacrificed. In addition, this four channel amplifier features high level input connections for those installations that lack an RCA connection. In addition to the high level inputs, this amplifier also utilizes an adapter harness for the speaker outputs allowing for an easier installation.

Review: Awesome little amp. Very stable signal. Tuned with an oscilloscope to match my sub.
Review: Good value, lots of power. make sure you mount this amp with a gap as the fan is located on the bottom. It worked a lot better for me once I gave it more room to breathe. It gets hot and will overheat if you do not do this

## 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 |
|---------------|-------|
| ASIN | B01EQX5ORK |
| Brand Name | Skar Audio |
| Customer Reviews | 4.3 4.3 out of 5 stars (1,463) |
| Global Trade Identification Number | 00739189979165 |
| Included Components | Skar Audio SK-M4004D Compact Full-Range Class D 4 Channel Amplifier |
| Item Dimensions | 20.1 x 11.8 x 4.2 centimeters |
| Item Type Name | Car Amplifier |
| Item Weight | 1.7 kg |
| Manufacturer | Skar Audio |
| Material Type | Mosfet |
| Maximum Supply Voltage | 14.4 Volts |
| Minimum Supply Voltage | 14.4 Volts |
| Model | SK-M4004D |
| Mounting Type | Surface Mount |
| Number of Channels | 4 |
| Output Power | 400 Watts |
| Specification Met | CE |
| UPC | 739189979165 |
| Unit Count | 1 Count |
| Voltage | 14.4 Volts |

## Product Details

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

## Images

![Skar Audio 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)
![Skar Audio A U D I O Compact Full-Range Rms Mosfet 4 Channel Car Amplifier (SK-M4004D,400W) - Image 2](https://m.media-amazon.com/images/I/5179+jkRbxL.jpg)
![Skar Audio A U D I O Compact Full-Range Rms Mosfet 4 Channel Car Amplifier (SK-M4004D,400W) - Image 3](https://m.media-amazon.com/images/I/61VBhOFwuNL.jpg)
![Skar Audio A U D I O Compact Full-Range Rms Mosfet 4 Channel Car Amplifier (SK-M4004D,400W) - Image 4](https://m.media-amazon.com/images/I/61Drb+xgS5L.jpg)
![Skar Audio A U D I O Compact Full-Range Rms Mosfet 4 Channel Car Amplifier (SK-M4004D,400W) - Image 5](https://m.media-amazon.com/images/I/81EOuSV-14L.jpg)

## Available Options

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

## Questions & Answers

**Q: Does this one come with a fan inside?**
A: yes it comes with a built in fan on the bottom side..

**Q: Can I order a replacement hi-level input?**
A: I believe so. I would visit Skar official website and write them an email. They're quick to respond and very helpful.

**Q: Where is mount push a 4 on 10 inch sub**
A: @ 4 ohm = 250 RMS
@ 2 ohm = 500 RMS
 
Depending on sub power requirements

**Q: Will this amp push a 15 inch skar sub with 600 rms**
A: Under power. I would get a 1200 @2ohm 600 @ 4ohm efficient amp

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by R***G on 18 December 2024*

Awesome little amp. Very stable signal. Tuned with an oscilloscope to match my sub.

### ⭐⭐⭐⭐⭐ Review
*by M***C on 7 October 2023*

Good value, lots of power. make sure you mount this amp with a gap as the fan is located on the bottom. It worked a lot better for me once I gave it more room to breathe. It gets hot and will overheat if you do not do this

### ⭐⭐⭐⭐⭐ Review
*by J***K on 2 February 2026*

Pleasantly surprised with this amp. This amp replaces my old 4 channel amp and mono sub amp. It is running my 6x9 front door speakers and 6.5 rear door speakers along with a 10” pioneer subwoofer. This amp is a bargain for what it’s capable of doing. The sound is nice and the build quality looks great. I would buy this amp again.

## Frequently Bought Together

- Skar Audio SK-M5001D Compact Monoblock Class D MOSFET Car Amplifier, 500W
- Skar Audio 8 Gauge OFC Complete Amplifier Installation Wiring Kit, SKAR8MANL-OFC
- Skar Audio Single 10" Loaded Subwoofer Enclosure Compatible with 2016-2023 Toyota Tacoma Double Cab Trucks

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*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-04-22*