--- product_id: 223932020 title: "SK-M4004D Compact Full-Range RMS Mosfet 4 Channel Car Amplifier, Class D, 400W" brand: "skar audio" price: "€ 685.62" currency: EUR in_stock: true reviews_count: 5 category: "Skar Audio" url: https://www.desertcart.hr/products/223932020-sk-m4004d-compact-full-range-rms-mosfet-4-channel-car store_origin: HR region: Croatia --- # 140W x4 RMS @ 2Ω Ultra-compact 7.9in x 4.6in x 1.7in HPF/LPF/Full-range crossover SK-M4004D Compact Full-Range RMS Mosfet 4 Channel Car Amplifier, Class D, 400W **Brand:** skar audio **Price:** € 685.62 **Availability:** ✅ In Stock ## Summary > 🎵 Compact Powerhouse: Big Sound, Small Package, Zero Compromise! ## Quick Answers - **What is this?** SK-M4004D Compact Full-Range RMS Mosfet 4 Channel Car Amplifier, Class D, 400W by skar audio - **How much does it cost?** € 685.62 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/223932020-sk-m4004d-compact-full-range-rms-mosfet-4-channel-car) ## 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 - • **Space-Savvy Design:** Ultra-compact footprint fits seamlessly into any ride without sacrificing power or performance. - • **Power Meets Precision:** Delivers a robust 140 watts RMS per channel at 2 ohms for crystal-clear, room-filling sound. - • **Tailored Sound Control:** Customizable high-pass, low-pass, and full-range crossover settings for a personalized audio experience. - • **Built to Last & Protect:** 4-way protection circuitry guards against thermal, voltage, speaker, and DC faults for reliable, worry-free driving. - • **Plug & Play Versatility:** High-level input connections and adapter harness simplify installation, even without RCA inputs. ## Overview The Skar Audio SK-M4004D is a compact yet powerful Class D 4-channel car amplifier delivering 140W RMS per channel at 2 ohms. Engineered with a high-speed MOSFET power supply and versatile crossover controls, it offers premium sound customization in a space-saving design. Featuring high-level inputs and robust 4-way protection circuitry, it ensures easy installation and reliable performance for audiophiles who demand big sound without bulk. ## 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 - Ultra Compact MOSFET Full-Range 4-Channel Class D Car Amplifier - RMS Power @ 2 Ohms: 140 Watts x 4 Channels (14.4v) - RMS Power @ 4 Ohms: 100 Watts x 4 Channels (14.4v) - Crossover Controls: HPF / Full-Range / LPF | Frequency Response: 10Hz - 40kHz - Hi-Level Input Connections: Yes | 8 Gauge Power and Ground Input Terminals ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01EQX5ORK | | Brand Name | Skar Audio | | Customer Reviews | 4.2 out of 5 stars 437 Reviews | | 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 | 3.74 Pounds | | 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 | | Model Number | SK-M4004D | | Mounting Type | Surface Mount | | Number of Channels | 4 | | Output Power | 134 Watts | | Specification Met | CE | | UPC | 739189979165 | | Unit Count | 1.0 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 ![SK-M4004D Compact Full-Range RMS Mosfet 4 Channel Car Amplifier, Class D, 400W - Image 1](https://m.media-amazon.com/images/I/61npvuKc0ML.jpg) ![SK-M4004D Compact Full-Range RMS Mosfet 4 Channel Car Amplifier, Class D, 400W - Image 2](https://m.media-amazon.com/images/I/5179+jkRbxL.jpg) ![SK-M4004D Compact Full-Range RMS Mosfet 4 Channel Car Amplifier, Class D, 400W - Image 3](https://m.media-amazon.com/images/I/61VBhOFwuNL.jpg) ![SK-M4004D Compact Full-Range RMS Mosfet 4 Channel Car Amplifier, Class D, 400W - Image 4](https://m.media-amazon.com/images/I/61Drb+xgS5L.jpg) ![SK-M4004D Compact Full-Range RMS Mosfet 4 Channel Car Amplifier, Class D, 400W - Image 5](https://m.media-amazon.com/images/I/81EOuSV-14L.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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/223932020-sk-m4004d-compact-full-range-rms-mosfet-4-channel-car](https://www.desertcart.hr/products/223932020-sk-m4004d-compact-full-range-rms-mosfet-4-channel-car) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-05-24*