---
product_id: 14398302
title: "MC900B 4 Channel Amplifier for ATV UTV Car Marine - 500 High Output, Low Level Inputs, Full Range, Weatherproof, Bass for Subwoofer"
brand: "boss audio systems"
price: "R5174"
currency: ZAR
in_stock: true
reviews_count: 13
category: "Boss Audio Systems"
url: https://www.desertcart.co.za/products/14398302-mc900b-4-channel-amplifier-for-atv-utv-car-marine-500
store_origin: ZA
region: South Africa
---

# 500W max power output 4-channel full range sound Weatherproof for all terrains MC900B 4 Channel Amplifier for ATV UTV Car Marine - 500 High Output, Low Level Inputs, Full Range, Weatherproof, Bass for Subwoofer

**Brand:** boss audio systems
**Price:** R5174
**Availability:** ✅ In Stock

## Summary

> 🎵 Elevate your ride’s vibe with Boss-level power and weatherproof swagger!

## Quick Answers

- **What is this?** MC900B 4 Channel Amplifier for ATV UTV Car Marine - 500 High Output, Low Level Inputs, Full Range, Weatherproof, Bass for Subwoofer by boss audio systems
- **How much does it cost?** R5174 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/14398302-mc900b-4-channel-amplifier-for-atv-utv-car-marine-500)

## 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

- • **Charge On The Go:** USB port keeps your devices powered up so your playlist never stops.
- • **Compact Yet Mighty:** Sleek 7.8” x 3.8” x 1.75” footprint fits discreetly, delivering big sound without bulk.
- • **Power Your Adventures:** Unleash 125W RMS x4 channels for crystal-clear, room-filling sound wherever you go.
- • **Built to Brave the Elements:** Weatherproof design means your sound stays flawless rain or shine, perfect for ATVs and boats.
- • **Seamless Bluetooth Streaming:** Cut the cord—stream Spotify, Pandora, and more with the included remote control.

## Overview

The BOSS Audio Systems MC900B is a compact, 4-channel Class A/B amplifier delivering up to 500 watts max power. Designed for ATV, UTV, car, and marine use, it features full-range output, weatherproof connectors, Bluetooth streaming with remote control, auxiliary input, and a USB charging port. Its rugged build and versatile connectivity make it ideal for outdoor enthusiasts seeking powerful, high-quality sound without the need for a head unit.

## Description

Pump out the jams on your next adventure with the Boss Audio MC900B Class A/B 4-Channel Full Range All-Terrain Amplifier. This 4-Ohm stable Amplifier features 500 Watts Max Power to keep your tunes rolling. Hook your smartphone or MP3 Player up through the Auxiliary Input to listen to your playlists. Plug into the USB Port to charge your USB-Connected devices. Bluetooth Audio Streaming lets you play your favorite music apps like Pandora or Spotify. No need for an In-Dash Head Unit to play your music. Control it all with the Inline Multi-Function Remote Control. The MC900B Amplifier features weatherproof connectors to prevent corrosion and provide protection against the elements. Feel the music with the Boss Audio MC900B. For further product details, please scroll down.

Review: Fantastic way to simplify your sound system if you use your phone for music! - Easy to install, all clearly labeled. Excellent sound quality, small in size, easy to place in a hidden area, and the controller has a nice long cord so you can place it anywhere you want. The bluetooth connection is seamless and connects almost instantly. It’s an excellent value for the price, i haven’t bought a radio or amplifier that i have liked more. I use it with an iPad that i use for my radio and it charges it seamlessly. The USB cord only charges though so keep that in mind, its bluetooth only, but like I said it’s a nearly perfect bluetooth connection. It will also run a separate amplifier for a subwoofer or whatever you want. It’s a fantastic Amplifier with a great sound output and good volume control. No radio needed!!
Review: Nice little unit - I picked this up on a black Friday deal last year for my 91 Corvette. I'm really impressed with this little unit. I'm running some mid range pioneer speakers and it's very loud. Loud enough that driving 80 with the top off and you can still hear it clearly. I'm also using a software EQ which helps a bunch. There is no built in fader as others have stated. But you can easily wire in a fader control for $12 or so. This unit supports 4 and 8 ohm speakers which is a nice feature. Overall I'm really happy with it. No idea on longevity yet.

## Features

- Power - 125 Watts Max x 4 @4 Ohms, 94 Watts RMS x 4 @4 Ohms
- Specs - Dimensions - 1.75” x 6.6” x 1.75”, Weighs 2.9 lbs.
- Bluetooth - You do not need a head unit. Just power up the MC900B and hook up some speakers to it. The included Bluetooth remote control lets you stream your music via your Bluetooth device and use apps like Spotify and Pandora
- Auxiliary in - The Bluetooth remote is compatible with the audio output from smartphones as well as MP3 players. Just plug in and start playing
- USB Charging - You can charge your USB devices using the USB charging port
- Weatherproof - The MC900B has been designed to handle some light weather conditions without giving up on you. It is great for use in ATVs and boats.
- Class AB - Class ‘A’ amplifiers have enormous amount of current flowing through its output transistors with no audio signal. Class ‘B’ amplifiers have no current flowing through its outputs with no audio signal
- Full Range - With a Full Range amplifier you not only have the option to run your speakers, but also your subwoofers
- BOSS Audio Systems provides a powerful 6-year Platinum Online Dealer Warranty so long as the purchase is made through desertcart.com. We strongly encourage professional installation of this product to ensure proper and safe functionality

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00IBI518Y |
| Batteries | 1 12V batteries required. |
| Best Sellers Rank | #20,503 in Electronics ( See Top 100 in Electronics ) #23 in Car Multichannel Amplifiers |
| Brand | BOSS Audio Systems |
| Date First Available | March 31, 2014 |
| Department | BOSS AUDIO |
| Global Trade Identification Number | 00791489100762 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 2.86 pounds |
| Item dimensions L x W x H | 7.8 x 3.8 x 1.75 inches |
| Item model number | MC900B |
| Manufacturer | BOSS Audio Systems |
| Material | Durable Materials (Metal, Robust Plastic) |
| Maximum Supply Voltage | 12 Volts (DC) |
| Mounting Type | Table Top |
| Number of Channels | 4 |
| Output Power | 500 Watts |
| Package Type Name | Marine Weather Proof 500-Watt Full Range |
| Product Dimensions | 7.8 x 3.8 x 1.75 inches |
| Specification Met | certified frustration-free |
| UPC | 791489100762 |
| Voltage | 12 Volts |

## Product Details

- **Item dimensions L x W x H:** 7.8 x 3.8 x 1.75 inches
- **Manufacturer:** BOSS Audio Systems
- **Maximum Supply Voltage:** 12 Volts (DC)
- **Mounting Type:** Table Top
- **Voltage:** 12 Volts

## Images

![MC900B 4 Channel Amplifier for ATV UTV Car Marine - 500 High Output, Low Level Inputs, Full Range, Weatherproof, Bass for Subwoofer - Image 1](https://m.media-amazon.com/images/I/81TdBbWe9OL.jpg)

## Available Options

This product comes in different **Pattern** options.

## 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

### ⭐⭐⭐⭐⭐ Fantastic way to simplify your sound system if you use your phone for music!
*by M***U on June 25, 2025*

Easy to install, all clearly labeled. Excellent sound quality, small in size, easy to place in a hidden area, and the controller has a nice long cord so you can place it anywhere you want. The bluetooth connection is seamless and connects almost instantly. It’s an excellent value for the price, i haven’t bought a radio or amplifier that i have liked more. I use it with an iPad that i use for my radio and it charges it seamlessly. The USB cord only charges though so keep that in mind, its bluetooth only, but like I said it’s a nearly perfect bluetooth connection. It will also run a separate amplifier for a subwoofer or whatever you want. It’s a fantastic Amplifier with a great sound output and good volume control. No radio needed!!

### ⭐⭐⭐⭐⭐ Nice little unit
*by R***L on August 21, 2025*

I picked this up on a black Friday deal last year for my 91 Corvette. I'm really impressed with this little unit. I'm running some mid range pioneer speakers and it's very loud. Loud enough that driving 80 with the top off and you can still hear it clearly. I'm also using a software EQ which helps a bunch. There is no built in fader as others have stated. But you can easily wire in a fader control for $12 or so. This unit supports 4 and 8 ohm speakers which is a nice feature. Overall I'm really happy with it. No idea on longevity yet.

### ⭐⭐⭐⭐ Works well, no F/R adjustment
*by R***B on November 28, 2020*

Installed this unit in a classic truck, so that I could stream music from my phone and leave the original 3-hole head unit in dash for an original look. Installion was pretty easy and it fits easy under the passenger side of my bench seat. While it connects to my phone via Bluetooth flawlessly, I'm a little disappointed that front & rear power can't be adjusted; my rear speakers don't hit as hard as I would like.

## 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 South Africa*
*Store origin: ZA*
*Last updated: 2026-03-12*