---
product_id: 46904373
title: "NA2-320.4 Compact Four Channel, 320 watt Powersports Amplifier, Black"
brand: "mb quart"
price: "€ 224.90"
currency: EUR
in_stock: true
reviews_count: 10
category: "Mb Quart"
url: https://www.desertcart.pt/products/46904373-na2-320-4-compact-four-channel-320-watt-powersports-amplifier
store_origin: PT
region: Portugal
---

# 320W max power output 4-channel full range Class D amp Quick-release Molex connectors NA2-320.4 Compact Four Channel, 320 watt Powersports Amplifier, Black

**Brand:** mb quart
**Price:** € 224.90
**Availability:** ✅ In Stock

## Summary

> 🎵 Unleash your ride’s true sound potential with MB Quart’s compact power!

## Quick Answers

- **What is this?** NA2-320.4 Compact Four Channel, 320 watt Powersports Amplifier, Black by mb quart
- **How much does it cost?** € 224.90 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/46904373-na2-320-4-compact-four-channel-320-watt-powersports-amplifier)

## 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 | #62,007 in Electronics ( See Top 100 in Electronics ) #112 in Car Multichannel Amplifiers |
| Brand | MB Quart |
| Customer Reviews | 4.6 4.6 out of 5 stars (121) |
| Date First Available | February 10, 2017 |
| Global Trade Identification Number | 00806576227335 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1 pounds |
| Item dimensions L x W x H | 2 x 4 x 6 inches |
| Item model number | NA23204 |
| Manufacturer | MB Quart |
| Material | Metal |
| Maximum Supply Voltage | 0.9 Volts (DC) |
| Mounting Type | Surface Mount |
| Number of Channels | 4 |
| Output Power | 320 Watts |
| Package Type Name | Box |
| Product Dimensions | 2 x 4 x 6 inches |
| Specification Met | Abyc, Astm |
| UPC | 806576227335 |
| Voltage | 9 Volts |

## 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

![NA2-320.4 Compact Four Channel, 320 watt Powersports Amplifier, Black - Image 1](https://m.media-amazon.com/images/I/61OS46W47DL.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)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-02-08*