---
product_id: 731914654
title: "BOSS Audio Systems 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: "$719.28"
currency: USD
in_stock: true
url: https://www.desertcart.ec/products/731914654-boss-audio-systems-mc900b-4-channel-weatherproof-amplifier-bluetooth-enabled
store_origin: EC
region: Ecuador
---

# 500W peak power output Marine weatherproof design 4-channel full-range amplifier BOSS Audio Systems 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:** $719.28
**Availability:** ✅ In Stock

## Summary

> 🎵 Ride the wave of flawless sound—wherever life takes you!

## Quick Answers

- **What is this?** BOSS Audio Systems 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?** $719.28 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/731914654-boss-audio-systems-mc900b-4-channel-weatherproof-amplifier-bluetooth-enabled)

## 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

- • **Power Your Soundscape:** Unleash crisp, powerful audio with 500 watts of peak power for immersive listening anywhere.
- • **Versatile Connectivity:** Supports AUX-IN, RCA output, and USB charging for all your devices and setups.
- • **Built to Brave the Elements:** Marine-grade weatherproofing ensures your amplifier thrives in sun, rain, or sea spray—no compromises.
- • **Seamless Bluetooth Streaming:** Cut the cords and stream your favorite playlists effortlessly with built-in Bluetooth connectivity.
- • **Stable & Reliable Performance:** Class A/B design drives 4-8 ohm speakers with consistent, distortion-free sound.

## Overview

The BOSS Audio Systems MC900B is a 4-channel, 500-watt Class A/B amplifier designed for marine environments. Featuring weatherproof construction, Bluetooth audio streaming, and versatile input/output options, it delivers stable, high-quality sound for 4-8 ohm speakers, perfect for professionals seeking reliable, powerful audio on the go.

## 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

## 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 |
|---------------|-------|
| Batteries | 1 12V batteries required. |
| Item model number | MC900B |
| Is Discontinued By Manufacturer | No |
| Speaker Count | 2 |
| Power Source | Power cord type |
| Voltage | 12 Volts |
| Wattage | 500 W |

## Product Details

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

## Images

![BOSS Audio Systems 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

## 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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**Shop now:** [https://www.desertcart.ec/products/731914654-boss-audio-systems-mc900b-4-channel-weatherproof-amplifier-bluetooth-enabled](https://www.desertcart.ec/products/731914654-boss-audio-systems-mc900b-4-channel-weatherproof-amplifier-bluetooth-enabled)

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-02-02*