--- product_id: 547190346 title: "MB Quart NA2-400.1 Compact 400 watt Mono Powersports Amplifier to for a subwoofer" brand: "mb quart" price: "$494.61" currency: USD in_stock: false reviews_count: 5 category: "Mb Quart" url: https://www.desertcart.us/products/547190346-mb-quart-na2-400-1-compact-400-watt-mono-powersports store_origin: US region: United States of America --- # 400W max power output IPX5 marine-grade waterproofing Aluminum heatsink for advanced cooling MB Quart NA2-400.1 Compact 400 watt Mono Powersports Amplifier to for a subwoofer **Brand:** mb quart **Price:** $494.61 **Availability:** ❌ Out of Stock ## Summary > 🌊⚑ Power your waves with crystal-clear bass that won’t quit! ## Quick Answers - **What is this?** MB Quart NA2-400.1 Compact 400 watt Mono Powersports Amplifier to for a subwoofer by mb quart - **How much does it cost?** $494.61 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/547190346-mb-quart-na2-400-1-compact-400-watt-mono-powersports) ## Best For - mb quart enthusiasts ## Why This Product - Trusted mb quart brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Cool Under Pressure:** Aluminum heatsink and PWM power supply keep your amp running efficiently without overheating. - β€’ **Built for the Elements:** IPX5-rated waterproof design and marine-grade connectors ensure durability against salt spray and harsh weather. - β€’ **Plug & Play Confidence:** Nickel-plated RCA connectors and quick-disconnect wiring make installation and seasonal removal effortless. - β€’ **Unstoppable Marine Power:** 400 watts max output delivers booming subwoofer performance on any watercraft. - β€’ **Crystal-Clear Audio Precision:** Low-noise preamp and full LPF control guarantee distortion-free, finely tuned sound. ## Overview The MB Quart NA2-400.1 is a compact, marine-grade mono amplifier delivering up to 400 watts of clean, distortion-free power. Engineered with IPX5 waterproofing, advanced cooling via aluminum heatsink, and durable nickel-plated connectors, it’s built to withstand harsh marine environments while providing precise subwoofer control and easy installation for any powersports audio setup. ## Description Bring the concert to the water with the MB Quart Marine Powersports Nautic 1-Channel 400-Watt Class D Amplifier. This powerful, versatile amp is built to IPX standards to resist water while delivering crisp, clear audio. Durable and well-built, the amplifier resists extreme weather and salt spray, letting you enjoy quality audio out on the water. A low-noise preamplifier circuit maximizes power at low voltage to produce clear music audio with minimal distortion. With a signal-to-noise ratio of less than 100dB, you can listen to your favorite tunes without interruption in quality. Prewired inputs connect via RCA-nickel plated terminals that are high temperature and impact protected to provide secure connections. The PWM MOSFET power supply provides stable power through PC board with minimal heat generation and the aluminum heatsink dissipates heat quickly to allow the amp to run on lower impedance for a longer duration. With a single audio channel and a maximum power of 400 watts, this audio receiver gives you quality audio wherever you go. Enjoy your favorite tunes out on the water with the Nautic Marine Mono-Channel Waterproof Amplifier by MB Quart Review: great little sub amp Review: Awesome little Amp ## Features - Marine-Grade Durability: Built to withstand extreme weather and salt spray, this mono-channel waterproof boat amplifier features marine-specific connectors for reliable performance on the water. - Powerful Sound Output: Delivers 400 watts max power with RMS ratings of 1 x 400W at 2 ohms and 1 x 200W at 4 ohms, providing crystal-clear, high-powered audio for any marine setup. - Superior Audio Quality: Low-noise preamplifier circuit ensures clean sound with no distortion, while full LPF control offers precise tuning when using multiple amplifiers. - Advanced Cooling & Design: Aluminum heatsink and Simpatico coil design with PWM power supply maintain constant voltage and efficient heat dissipation for long-lasting operation. - Safe & Easy Connections: RCA nickel-plated connectors resist heat and impact, while quick-disconnect wiring simplifies seasonal removal. Built-in protection guards against overload and short circuits. ## Technical Specifications | Specification | Value | |---------------|-------| | Brand Name | MB Quart | | Colour Name | BLACK | | Specification Met | Astm, Ipx5 | | Special Features | subwoofer | | Product Dimensions | 5.08 x 10.16 x 15.24 cm; 948.01 g | | Item model number | NA2-400.1 | | Manufacturer | Mbquart | | Item Weight | 948 g | ## Product Details - **Item dimensions L x W x H:** 2 x 4 x 6 inches - **Voltage:** 9 Volts - **Manufacturer:** Mbquart - **Maximum Supply Voltage:** 9 Volts - **Minimum Supply Voltage:** 0.2 Volts ## Images ![MB Quart NA2-400.1 Compact 400 watt Mono Powersports Amplifier to for a subwoofer - Image 1](https://m.media-amazon.com/images/I/61h9gPb0wsL.jpg) ![MB Quart NA2-400.1 Compact 400 watt Mono Powersports Amplifier to for a subwoofer - Image 2](https://m.media-amazon.com/images/I/71SqTCSaK9L.jpg) ![MB Quart NA2-400.1 Compact 400 watt Mono Powersports Amplifier to for a subwoofer - Image 3](https://m.media-amazon.com/images/I/818xwIfAGoL.jpg) ![MB Quart NA2-400.1 Compact 400 watt Mono Powersports Amplifier to for a subwoofer - Image 4](https://m.media-amazon.com/images/I/713Sib6gKTL.jpg) ![MB Quart NA2-400.1 Compact 400 watt Mono Powersports Amplifier to for a subwoofer - Image 5](https://m.media-amazon.com/images/I/815VwbyOXQL.jpg) ## Questions & Answers **Q: Can this get wet?** A: No. The terminals and cooling vents are not waterproof. What makes these amplifiers preferable for recreational vehicles is that they have pigtail connections versus exposed wore terminals offering some protection to liquid splashes, but by no means waterproof. **Q: is it marine rated?** A: Yes **Q: Does this amp have speaker (high) level inputs?** A: No. RCA inputs only. You will need a LOC to convert to low level outputs. **Q: I have a 2018 polaris with ride command, will this amp connect to the ride command head unit?** A: Not sure better check with Polaris ## Customer Reviews ### ⭐⭐⭐⭐⭐ great little sub amp *by N***. on 17 November 2021* ### ⭐⭐⭐⭐⭐ Awesome little Amp *by K***L on 8 July 2019* ### ⭐⭐⭐⭐⭐ Perfect for SXS *by T***. on 31 July 2025* ## Frequently Bought Together - MB Quart NA2-400.1 Compact 400 watt Mono Powersports Amplifier to for a subwoofer - MB Quart, 2 A-B Box, Black (NA24002) - MB Quart NA2-320.4 Compact Four Channel, 320 watt Powersports Amplifier, Black --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/547190346-mb-quart-na2-400-1-compact-400-watt-mono-powersports](https://www.desertcart.us/products/547190346-mb-quart-na2-400-1-compact-400-watt-mono-powersports) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-18*