--- product_id: 46904373 title: "MB Quart NA2-320.4 Compact Four Channel, 320 watt Powersports Amplifier, Black" brand: "mb quart" price: "$334.36" currency: USD in_stock: true reviews_count: 8 category: "Mb Quart" url: https://www.desertcart.us/products/46904373-mb-quart-na2-320-4-compact-four-channel-320-watt store_origin: US region: United States of America --- # 320W max power output 4-channel full range Class D amp Quick-release Molex connectors MB Quart NA2-320.4 Compact Four Channel, 320 watt Powersports Amplifier, Black **Brand:** mb quart **Price:** $334.36 **Availability:** ✅ In Stock ## Summary > 🎵 Unleash your ride’s true sound potential with MB Quart’s compact power! ## Quick Answers - **What is this?** MB Quart NA2-320.4 Compact Four Channel, 320 watt Powersports Amplifier, Black by mb quart - **How much does it cost?** $334.36 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/46904373-mb-quart-na2-320-4-compact-four-channel-320-watt) ## 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 - • **Built for Adventure:** Marine and powersports certified, engineered to withstand the elements while delivering premium audio. - • **Effortless Installation:** Quick-release Molex connectors and onboard equalization make setup a breeze—no tech headaches. - • **Precision Audio Control:** Adjustable bass boost up to 12dB at 45Hz and high-pass/full crossover switches tailor your sound experience. - • **Power-Packed Performance:** Delivers a robust 320 watts across 4 channels for crystal-clear sound on the road or water. - • **Compact & Versatile Design:** Sleek, surface-mountable form factor fits seamlessly in motorcycles, cars, and powersports vehicles. ## Overview The MB Quart NA2-320.4 is a compact, 4-channel Class D amplifier delivering up to 320 watts of crisp, full-range audio. Designed for powersports and marine use, it features quick-release Molex connectors for easy installation, onboard equalization, adjustable bass boost, and a rugged build that fits perfectly in motorcycles and vehicles alike. Elevate your audio game with a powerhouse amp engineered for both performance and durability. ## Description 'MB Quart compact Two Channel, 400 watt Powersports amplifier with on-board equalization and simple instalation with quick release connectors. Specifications CLASS Full Range Class D VARIABLE VOLTAGE 0.2V~9V SIGNAL TO NOISE RATIO>90dB FREQUENCY RESPONSE 20Hz-20kHz CROSSOVER TYPE N/A CROSSOVER FREQUENCY RANGE CH1 & CH2 Switched HP/ Full CROSSOVER FREQUENCY RANGE CH3 & CH4 Switched HP/ Full BASS BOOST 0-12dB@45Hz SUBSONIC FILTER N/A POWER @ 2-OHMS 4 x 80W POWER @ 4-OHMS 4 x 40W TOTAL CHANNELS 4 AUDIO INPUTS RCA POWER TERMINAL 12V/GND Molex 10 ga SPEAKER TERMINAL WIRE GAUGE Molex Plug Connector FUSING 1 x 30 Amps CERTIFICATIONS Marine & Powersports DIMENSIONS 3.70 X 5.51 X 1.77 in 9.4 X 14.0 X 4.5 cm WEIGHT 2.16 lbs (0.98 kg)' Review: Worth the $ - Awesome little amp, installed on my Harley pushing 4-5.25 Polk Audios. Review: Fits my 2023 road glide perfectly - In car or bike description it shows it will not fit my 2023 HD road glide. But it does fit with lots more room. This MB Quart Marine Powersports Nautic 4 Channel 320 Watt Maximum Power Full Range Class D Amplifier with PWM MOSFET Power, Black. Works great! I have no problems with it at all. ## Features - Product Type: Car Audio Or Theater - Package Dimensions: 8.6 L X 18 W X 24.1 H (Centimeters) - Package Weight: 1.225 Kilograms - Country Of Origin: China ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B06W53BFT5 | | Best Sellers Rank | #154,071 in Electronics ( See Top 100 in Electronics ) #371 in Car Multichannel Amplifiers | | Brand | MB Quart | | Brand Name | MB Quart | | Customer Reviews | 4.6 out of 5 stars 123 Reviews | | Global Trade Identification Number | 00806576227335 | | Included Components | -JU711 | | Item Dimensions | 2 x 4 x 6 inches | | Item Type Name | Car Amplifiers | | Item Weight | 16 ounces | | Item dimensions L x W x H | 2 x 4 x 6 inches | | Manufacturer | MB Quart | | Material Type | Metal | | Maximum Supply Voltage | 0.9 Volts (DC) | | Model | NA23204 | | Mounting Type | Surface Mount | | Number of Channels | 4 | | Output Power | 320 Watts | | Package Type Name | Box | | Specification Met | Abyc, Astm | | UPC | 806576227335 | | Unit Count | 1.0 Count | | Voltage | 9 Volts | | Warranty Description | Manufacturer | ## Product Details - **Item dimensions L x W x H:** 2 x 4 x 6 inches - **Manufacturer:** MB Quart - **Maximum Supply Voltage:** 0.9 Volts (DC) - **Mounting Type:** Surface Mount - **Voltage:** 9 Volts ## Images ![MB Quart NA2-320.4 Compact Four Channel, 320 watt Powersports Amplifier, Black - Image 1](https://m.media-amazon.com/images/I/61OS46W47DL.jpg) ![MB Quart NA2-320.4 Compact Four Channel, 320 watt Powersports Amplifier, Black - Image 2](https://m.media-amazon.com/images/I/61bfQwcjLyL.jpg) ![MB Quart NA2-320.4 Compact Four Channel, 320 watt Powersports Amplifier, Black - Image 3](https://m.media-amazon.com/images/I/61AzSnl5mdL.jpg) ## Questions & Answers **Q: Is this the new version which includes the updated circuitry to eliminate turn-on pop?** A: Yes sir. Not had a problem with mine. I got it installed behind the factory radio for my jeep sounds nice. **Q: Does this come with the installation kit?** A: It has wire harness, you will need RCA’s and recommend a inline fuse. **Q: Do you have to have a deck or can it run off the phone bluetooth** A: It gets its signal from rca cables. No Bluetooth **Q: What is the frequency range for the high-pass crossover? i'm trying to figure out if i should use the high pass filter on a set of alpine s-s65c's** A: 89 - 500 Hz. On the woofers and 2400 Hz on the tweeters ## Customer Reviews ### ⭐⭐⭐⭐⭐ Worth the $ *by J***G on April 9, 2023* Awesome little amp, installed on my Harley pushing 4-5.25 Polk Audios. ### ⭐⭐⭐⭐⭐ Fits my 2023 road glide perfectly *by R***R on February 21, 2025* In car or bike description it shows it will not fit my 2023 HD road glide. But it does fit with lots more room. This MB Quart Marine Powersports Nautic 4 Channel 320 Watt Maximum Power Full Range Class D Amplifier with PWM MOSFET Power, Black. Works great! I have no problems with it at all. ### ⭐⭐⭐⭐⭐ Not too bad good quality *by D***. on October 19, 2022* Good sound and quality installed it on my Harley Davidson I will recommend this ## Frequently Bought Together - MB Quart NA2-320.4 Compact Four Channel, 320 watt Powersports Amplifier, Black - MB Quart NA2-400.1 Compact 400 watt Mono Powersports Amplifier to for a subwoofer - MB Quart, 2 A-B Box, Black (NA24002) --- ## 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.us/products/46904373-mb-quart-na2-320-4-compact-four-channel-320-watt](https://www.desertcart.us/products/46904373-mb-quart-na2-320-4-compact-four-channel-320-watt) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-04-22*