---
product_id: 41423841
title: "MB Quart NA540.6 540 RMS Watt 6-Channel Nautic Marine Boat Amplifier+Amp Kit"
brand: "mb55"
price: "$682.08"
currency: USD
in_stock: false
reviews_count: 1
category: "Sporting Goods"
url: https://www.desertcart.us/products/41423841-mb-quart-na540-6-540-rms-watt-6-channel-nautic
store_origin: US
region: United States of America
---

# MB Quart NA540.6 540 RMS Watt 6-Channel Nautic Marine Boat Amplifier+Amp Kit

**Brand:** mb55
**Price:** $682.08
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** MB Quart NA540.6 540 RMS Watt 6-Channel Nautic Marine Boat Amplifier+Amp Kit by mb55
- **How much does it cost?** $682.08 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/41423841-mb-quart-na540-6-540-rms-watt-6-channel-nautic)

## Best For

- mb55 enthusiasts

## Why This Product

- Trusted mb55 brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Six channel Nautic Marine audio amplifier with onboard electronic crossover, bass boost and adjustable input sensitivity. All six channels are full range. Features: MB QUART NA540.6 540 RMS Watt 6-Channel Nautic Series Marine Boat Amplifier Circuit Topology: Class A/B Voltage Gain: 0.2V~6.0V Signal to Noise: >93dB Frequency Response: 10Hz-45kHz Crossover Type: Electronic 12dB Per Octave Crossover Frequency Range CH1 & CH2 .....Hi Pass 250Hz - 4Khz .....Low Pass 40Hz-250Hz Crossover Frequency Range CH3 & CH4 .....Hi Pass 250Hz - 4Khz ......Low Pass 40Hz-250Hz Tone Control: Bass EQ 0~9dB@45HzRockville RMWK4 4AWG Guage Waterproof Marine/Boat Amplifier Wire Installation Kit. 20’ Blue Remote Wire. 1PC Silver Mini-ANL Fuse Holder – Clear Shell and Clear Blue Bottom Bracket with Blue Waterproof Ring. 1PC 60A Mini-ANL Fuse. 2PCS Ring Terminals 2PCS Spade Terminals. 5PCS Speaker Cable Terminals. 1PC Washer. 10PCS White Cable Ties Rockville MRCA20 RCA Interconnect Cable  20’ Ultra-Flexible PVC Shield Twisted Pair

## Features

- MB QUART NA540.6 540 RMS Watt 6-Channel Nautic Series Marine Boat Amplifier . Circuit Topology: Class A/B. Voltage Gain: 0.2V~6.0V. Signal to Noise: >93dB.
- Frequency Response: 10Hz-45kHz. Crossover Type: Electronic 12dB Per Octave. Crossover Frequency Range CH1 & CH2. .....Hi Pass 250Hz - 4Khz. .....Low Pass 40Hz-250Hz.
- Crossover Frequency Range CH3 & CH4. .....Hi Pass 250Hz - 4Khz. ......Low Pass 40Hz-250Hz. Tone Control: Bass EQ 0~9dB@45Hz.
- Rockville RMWK4 4AWG Guage Waterproof Marine/Boat Amplifier Wire Installation Kit. 25’ Translucent, Twisted Pair, High Quality, Tinned-CCA Flexible PVC RCA Cable. 20’ 4 Gauge High Current, Low Impedance, Clear Flexible Power Cable with 3’ Black Poly Woven Mesh to better resist chemicals in the battery compartment. 4’ 4 Gauge High Current, Low Impedance, Light Blue, Flexible Ground Cable. 25’ 16 Gauge 100% Tinned-OFC, White, Non-Transparent Resin PVC, Flat Speaker Cable.
- Rockville MRCA20 RCA Interconnect Cable . 20’ Ultra-Flexible PVC Shield. Twisted Pair. Premium Audiophile Marine RCA Interconnect Cable. High Performance Water Proof RCA Plugs. Tinned Copper Strands for Sonic Purity.

## Images

![MB Quart NA540.6 540 RMS Watt 6-Channel Nautic Marine Boat Amplifier+Amp Kit - Image 1](https://images-na.ssl-images-amazon.com/images/I/41sRgJBXy7L.jpg)
![MB Quart NA540.6 540 RMS Watt 6-Channel Nautic Marine Boat Amplifier+Amp Kit - Image 2](https://images-na.ssl-images-amazon.com/images/I/41LQuMClI3L.jpg)
![MB Quart NA540.6 540 RMS Watt 6-Channel Nautic Marine Boat Amplifier+Amp Kit - Image 3](https://images-na.ssl-images-amazon.com/images/I/41djf%2BJD%2BmL.jpg)
![MB Quart NA540.6 540 RMS Watt 6-Channel Nautic Marine Boat Amplifier+Amp Kit - Image 4](https://images-na.ssl-images-amazon.com/images/I/41OIJ7cVqRL.jpg)
![MB Quart NA540.6 540 RMS Watt 6-Channel Nautic Marine Boat Amplifier+Amp Kit - Image 5](https://images-na.ssl-images-amazon.com/images/I/41ROR4ntDuL.jpg)

## Customer Reviews

### ⭐⭐⭐ Three Stars
            
*by R***N on August 1, 2017*

Made hissing noise
  

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**Shop now:** [https://www.desertcart.us/products/41423841-mb-quart-na540-6-540-rms-watt-6-channel-nautic](https://www.desertcart.us/products/41423841-mb-quart-na540-6-540-rms-watt-6-channel-nautic)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-10-15*