---
product_id: 104256560
title: "Skar Audio SK-M4004D Compact Full-Range 400W RMS Class D MOSFET 4 Channel Car Amplifier"
brand: "skar audio"
price: "C$35078"
currency: NIO
in_stock: true
reviews_count: 5
category: "Skar Audio"
url: https://www.desertcart.ni/products/104256560-skar-audio-sk-m4004d-compact-full-range-400w-rms-class
store_origin: NI
region: Nicaragua
---

# MOSFET Class D efficiency Compact 4-channel design 400W RMS power output Skar Audio SK-M4004D Compact Full-Range 400W RMS Class D MOSFET 4 Channel Car Amplifier

**Brand:** skar audio
**Price:** C$35078
**Availability:** ✅ In Stock

## Summary

> ⚡ Unleash your car’s true sound potential with power and precision!

## Quick Answers

- **What is this?** Skar Audio SK-M4004D Compact Full-Range 400W RMS Class D MOSFET 4 Channel Car Amplifier by skar audio
- **How much does it cost?** C$35078 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/104256560-skar-audio-sk-m4004d-compact-full-range-400w-rms-class)

## 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

- • **Sleek & Compact:** Space-saving design fits seamlessly into any car setup without compromise.
- • **Wide Frequency Range:** Experience deep bass to crisp highs with 10Hz-40kHz frequency response.
- • **Efficient MOSFET Tech:** Class D amplifier ensures high power with minimal heat and energy loss.
- • **Optimized Sensitivity:** 85 dB sensitivity guarantees dynamic sound clarity even at lower volumes.
- • **Power-Packed Performance:** Delivers 134W x 4 channels at 2Ω for crystal-clear, room-filling sound.

## Overview

The SK-M4004D is a compact, full-range 400W RMS Class D MOSFET 4-channel car amplifier delivering 134W per channel at 2 ohms and 80W at 4 ohms. It features a wide 10Hz-40kHz frequency response and 85 dB sensitivity, combining efficient power output with a sleek design perfect for upgrading any vehicle audio system.

## Description

The Skar Audio SK-M4004D is an ultra compact, "mini", Class D full-range, four channel car speaker amplifier. 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 and cleaner installation. Further adding to the feature rich list of this amplifier are its high pass / full-range / and low pass user controls, as well as having 4-Way Protection Circuitry Built-in (Thermal, Voltage, Speaker, DC). Utilizes 8 Gauge Power and Ground Input Terminals. Amplifier's dimensions: 7.9in x 4.6in x 1.7in (L x W x H). Frequency Response: 10Hz - 40kHz.

Review: Powerful, Clean, and Compact 🔥
Review: It's the best you can get at this price.

## Features

- Compact MOSFET 4-Channel Class AB Car Amplifier
- RMS Power at 2 Ohms : 134 Watts x 4 Channels (14.4v)
- RMS Power at 4 Ohms : 80 Watts x 4 Channels (14.4v)
- Frequency Response : 10Hz-40kHz Hz
- Sensitivity : 85 dB

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01EQX5ORK |
| Best Sellers Rank | #12,471 in Electronics ( See Top 100 in Electronics ) #22 in Car Mono Amplifiers |
| Brand | Skar Audio |
| Customer Reviews | 4.3 4.3 out of 5 stars (1,524) |
| Date First Available | April 25, 2016 |
| Global Trade Identification Number | 00739189979165 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 3.74 pounds |
| Item dimensions L x W x H | 7.9 x 4.64 x 1.65 inches |
| Item model number | SK-M4004D |
| Manufacturer | Skar Audio |
| Material | Mosfet |
| Maximum Supply Voltage | 14.4 Volts |
| Minimum Supply Voltage | 14 Volts (DC) |
| Mounting Type | Surface Mount |
| Number of Channels | 4 |
| Output Power | 400 Watts |
| Product Dimensions | 7.9 x 4.64 x 1.65 inches |
| UPC | 739189979165 |
| Voltage | 14.4 Volts |
| Warranty | 2 year limited warranty |

## Product Details

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

## Images

![Skar Audio SK-M4004D Compact Full-Range 400W RMS Class D MOSFET 4 Channel Car Amplifier - Image 1](https://m.media-amazon.com/images/I/61npvuKc0ML.jpg)

## 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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Powerful, Clean, and Compact 🔥
*by D***K on 14 October 2025*



### ⭐⭐⭐⭐ It's the best you can get at this price.
*by J***R on 22 May 2022*



### ⭐⭐⭐ Quality of sound good quality of product not so good
*by C***. on 9 August 2025*



## 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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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-02-24*