---
product_id: 731914654
title: "MC900B 4 Channel Weatherproof Amplifier - Bluetooth Enabled, 500W with Bluetooth Multifunction Remote Control, Full Range A/B Class, Stable 4-8 Ohm Drive, AUX-IN RCA Output, USB Rechargeable"
brand: "boss audio systems"
price: "€ 347.10"
currency: EUR
in_stock: true
reviews_count: 8
category: "Boss Audio Systems"
url: https://www.desertcart.fr/products/731914654-mc900b-4-channel-weatherproof-amplifier-bluetooth-enabled-500w-with-bluetooth
store_origin: FR
region: France
---

# 500W max power output 4-channel Class A/B stable drive Weatherproof marine-grade design MC900B 4 Channel Weatherproof Amplifier - Bluetooth Enabled, 500W with Bluetooth Multifunction Remote Control, Full Range A/B Class, Stable 4-8 Ohm Drive, AUX-IN RCA Output, USB Rechargeable

**Brand:** boss audio systems
**Price:** € 347.10
**Availability:** ✅ In Stock

## Summary

> 🌊 Amplify your marine lifestyle with unstoppable sound and weatherproof durability!

## Quick Answers

- **What is this?** MC900B 4 Channel Weatherproof Amplifier - Bluetooth Enabled, 500W with Bluetooth Multifunction Remote Control, Full Range A/B Class, Stable 4-8 Ohm Drive, AUX-IN RCA Output, USB Rechargeable by boss audio systems
- **How much does it cost?** € 347.10 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/731914654-mc900b-4-channel-weatherproof-amplifier-bluetooth-enabled-500w-with-bluetooth)

## Best For

- boss audio systems enthusiasts

## Why This Product

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

## Key Features

- • **Plug, Play & Charge:** USB rechargeable and equipped with AUX-IN RCA outputs for versatile audio input options.
- • **Power Your Adventures:** Unleash 500 watts of crystal-clear sound, perfect for any marine or outdoor setup.
- • **Built to Brave the Elements:** Marine weatherproof casing ensures your music stays loud and clear rain or shine.
- • **Seamless Wireless Streaming:** Bluetooth connectivity lets you stream Spotify, Pandora, and more without missing a beat.
- • **Total Control at Your Fingertips:** Includes a Bluetooth multifunction remote for effortless volume and track management.

## Overview

The BOSS Audio Systems MC900B is a 4-channel, 500W max power Class A/B amplifier designed specifically for marine environments. It features weatherproof construction, Bluetooth audio streaming with a multifunction remote, USB charging, and versatile input/output options, making it a reliable and powerful choice for watercraft audio systems.

## Description

Weather Proof 500W MAX Power, 4 Channel 94W X 4 RMS @ 4 ohm;Full Range, Class A/B,;Aux, Low Level Inputs, RCA Pre-amp Outputs;Bluetooth Audio Streaming - play music and apps like Spotify/Pandora wirelessly;USB Charging, Bluetooth Inline Multi-function Remote; 6 Year Platinum Dealer Warranty

Review: なかなか販売されてなく探して買えましたマリンジェットを、爆音にします
Review: 水上バイクで使用の為、格安で安定したアンプです。 通常、水上バイクで使用すると、もって1～2シーズンです。 1シーズン持っても、この価格ならリピートします。

## Features

- BOSS AUDIO MC900B Marine Weather Proof 500-Watt Full Range, Class A/B 4-8 Ohm Stable 4 Channel Amplifier, with Audio Streaming
- L7.48" x W5.22" x H1.65"

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00IBI518Y |
| Amazon Bestseller | #113,022 in Electronics ( See Top 100 in Electronics ) #211 in Audio Component Power Amplifiers |
| Batteries | 1 12V batteries required. |
| Customer Reviews | 4.2 4.2 out of 5 stars (987) |
| Date First Available | September 26, 2014 |
| Is Discontinued By Manufacturer | No |
| Item model number | MC900B |
| Power Source | Power cord type |
| Speaker Count | 2 |
| Voltage | 12 Volts |
| Wattage | 500 W |

## Product Details

- **Brand:** BOSS Audio Systems
- **Global Trade Identification Number:** 00791489100762
- **Item dimensions L x W x H:** 19.8 x 9.7 x 4.4 cm
- **Number of Channels:** 4
- **Voltage:** 12 Volts

## Images

![MC900B 4 Channel Weatherproof Amplifier - Bluetooth Enabled, 500W with Bluetooth Multifunction Remote Control, Full Range A/B Class, Stable 4-8 Ohm Drive, AUX-IN RCA Output, USB Rechargeable - Image 1](https://m.media-amazon.com/images/I/81TdBbWe9OL.jpg)

## Questions & Answers

**Q: Is there any way to adjust the settings on the amp? It doesn't seem like I'm getting full power out of mine???**
A: I've got two of these installed in the fairing of two H-D. Both have worked great till recently.  
the older one just one day starting putting out about half the  volume it use to.  I connected a different speaker and no change.  I can switch my phone between the two and with the phone volume the same, the newer one is twice as loud.  Is this amp about to die?

**Q: Kindly recommend 6.5 inch powered speakers with bass of correct Watts & Impendance. Thanks**
A: This amp will have no problem driving 6.5" 4ohm speakers if they are in to 50-150watt range.  Remember it is 4 channel

**Q: Can this run 4 80w speakers?**
A: Yes. It will do fine w/ 4 speakers especially if they are low end or factory car speakers. 

If they are aftermarket higher end speakers you may struggle with clean sound at higher volumes...in which case I'd get a better $$ amp

**Q: How long is the wire for the remote?**
A: Well friend it’s about 10 feet long if you’re putting this on your motorcycle I definitely recommend it it’s the best add-on I did my bike I can go 80 mph and here Chris music

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by Y***N on November 30, 2025*

なかなか販売されてなく探して買えましたマリンジェットを、爆音にします

### ⭐⭐⭐⭐⭐ Review
*by A***ー on October 30, 2024*

水上バイクで使用の為、格安で安定したアンプです。 通常、水上バイクで使用すると、もって1～2シーズンです。 1シーズン持っても、この価格ならリピートします。

### ⭐ Review
*by あ***ち on September 4, 2025*

なんか電源がON/OFFしょっちゅうするので調べてみるとマイナスのアース線がコネクターから抜けてました。 不良品です(ﾉД`､)

## Frequently Bought Together

- BOSS Audio Systems MC900B 4 Channel Amplifier for ATV UTV Car Marine - 500 High Output, Low Level Inputs, Full Range, Weatherproof, Bass for Subwoofer
- BOSS Audio Systems KIT2 8 Gauge Complete Car Amplifier Installation Wiring Kit with Power Cables, Ground Cables, Turn-On Wire, Speaker Wire, Terminals
- BOSS Audio Systems MRGB65B 6.5 Inch Marine Boat Stereo Speakers - 200 Watts (per pair), Coaxial, 2 Way, Full Range, 4 Ohms, Multi-Color Illumination, Weatherproof, Sold in Pairs

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*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-02-25*