---
product_id: 727834405
title: "BOSS Audio Systems MGR300B Marine Boat Stereo Sound System Head Unit - No CD Player, Bluetooth Audio, IPX5 Rated, USB, MP3, AM/FM Radio Receiver"
brand: "boss audio systems"
price: "$647.25"
currency: USD
in_stock: false
reviews_count: 5
category: "Boss Audio Systems"
url: https://www.desertcart.us/products/727834405-boss-audio-systems-mgr300b-marine-boat-stereo-sound-system-head
store_origin: US
region: United States of America
---

# Seamless Bluetooth streaming 240W powerful stereo output IPX5 water & dust resistant BOSS Audio Systems MGR300B Marine Boat Stereo Sound System Head Unit - No CD Player, Bluetooth Audio, IPX5 Rated, USB, MP3, AM/FM Radio Receiver

**Brand:** boss audio systems
**Price:** $647.25
**Availability:** ❌ Out of Stock

## Summary

> 🚤 Elevate your boat vibes with sound that sails beyond limits!

## Quick Answers

- **What is this?** BOSS Audio Systems MGR300B Marine Boat Stereo Sound System Head Unit - No CD Player, Bluetooth Audio, IPX5 Rated, USB, MP3, AM/FM Radio Receiver by boss audio systems
- **How much does it cost?** $647.25 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/727834405-boss-audio-systems-mgr300b-marine-boat-stereo-sound-system-head)

## 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

- • **Immersive 240-Watt Audio Power:** Fill your boat with rich, crystal-clear stereo sound that commands attention on the water.
- • **Wireless Freedom with Bluetooth:** Stream your favorite playlists effortlessly from any smartphone or app like Spotify and Pandora.
- • **Night-Ready Illuminated Controls:** Backlit panel lets you navigate your music with ease even after sunset—no fumbling, just flow.
- • **Unmatched Marine-Grade Durability:** IPX5 rating ensures splash and dust resistance, built to brave the elements on every voyage.
- • **Versatile Connectivity & Charging:** USB port for your entire audio library plus device charging, with auxiliary input for all your gadgets.

## Overview

The BOSS Audio Systems MGR300B is a compact, marine-grade stereo head unit delivering 240 watts of stereo sound with IPX5 water and dust resistance. Featuring Bluetooth streaming, USB and auxiliary inputs, and illuminated controls, it’s designed for seamless, durable performance on the water. Perfect for professionals who demand reliable, high-quality audio and connectivity while boating.

## Description

BOSS Audio Systems MGR300B Marine Boat Stereo Sound System Head Unit - No CD Player, Bluetooth Audio, IPX5 Rated, USB, MP3, AM/FM Radio Receiver

Review: Muy buen producto; cumple con lo que promete.
Review: Sounds great and easy to install! Has been on the boat for 3 years now and still working great!

## Features

- Bluetooth - Play and control music through your smartphone or MP3 player as well as apps like Spotify / Pandora, wirelessly
- Weatherproof - The MGR300B has been outfitted with the latest weatherproofing techniques such as PC board with conformal coating. It has an IPX5 water resistant / dustproof rating for protection against splashing water and dust
- Illuminated Controls - Let there be night! Navigate through the system with ease after the sun goes down with the backlit panel
- Inputs - The USB port provides a vast audio library. Charge USB compatible devices. The auxiliary input is compatible with audio output from smartphones and MP3 players
- Outputs - Use the front pre-amp outputs to hook up your speakers (front left / front right)
- Specs - Dimensions: 4.5” x 3.7” x 4.5”, Weight: 1.34 lbs., Switchable US & EU Tuner Frequencies
- Warranty - BOSS Audio Systems provides a powerful 3-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 | B09TRZZJSH |
| Audio Encoding | Windows Media Audio (WMA) |
| Audio Output Type | Speakers |
| Audio Wattage | 240 Watts |
| Audio output mode | Stereo |
| Batteries Included | No |
| Batteries Required | No |
| Brand | BOSS Audio Systems |
| Compatible Devices | Android, Smartphone, iPhone |
| Compatible media type | CD |
| Connector Type | Auxiliary, Bluetooth, USB |
| Customer Reviews | 4.5 4.5 out of 5 stars (155) |
| Date First Available | 31 December 2023 |
| Does it contain liquid? | No |
| Generic Name | BOSS Audio Systems MGR300B Marine Boat Stereo Sound System Head Unit - No CD Player, Bluetooth Audio, IPX5 Rated, USB, MP3, AM/FM Radio Receiver |
| Hardware Interface | USB |
| Includes remote | No |
| Item Dimensions LxWxH | 9.5 x 11.5 x 11.5 Centimeters |
| Item Weight | 608 g |
| Item model number | MGR300B |
| Manufacturer | BOSS Audio Systems |
| Material | Plastic |
| Media Format | WMA |
| Model | MGR300B |
| Model Name | MGR300B |
| Mounting Hardware | Mounting kit, rubber cover, instruction manual |
| Net Quantity | 1.0 Count |
| Number of items | 1 |
| Power Source | Battery Powered |
| Product Dimensions | 9.47 x 11.51 x 11.51 cm; 607.81 g |
| Radio bands supported | AM, FM |
| Speaker Output Channel Quantity | 2 |
| Speaker Surround Sound Channel Configuration | 4.0 |
| Special Features | Built-In Bluetooth |
| Supported audio formats | CD, MP3 |
| Supports Bluetooth Technology | Yes |
| Tuner Technology | AM/FM |
| Wattage | 240 Watts |

## Product Details

- **Audio Encoding:** Windows Media Audio (WMA)
- **Audio Output Mode:** Stereo
- **Brand:** BOSS Audio Systems
- **Colour:** Black
- **Compatible Devices:** Android, Smartphone, iPhone
- **Connectivity Technology:** Auxiliary, Bluetooth, USB
- **Connector Type:** RCA
- **Controller Type:** Android
- **Special Feature:** Built-In Bluetooth
- **Surround Sound Channel Configuration:** 4.0

## Images

![BOSS Audio Systems MGR300B Marine Boat Stereo Sound System Head Unit - No CD Player, Bluetooth Audio, IPX5 Rated, USB, MP3, AM/FM Radio Receiver - Image 1](https://m.media-amazon.com/images/I/71XuoZmXnhL.jpg)
![BOSS Audio Systems MGR300B Marine Boat Stereo Sound System Head Unit - No CD Player, Bluetooth Audio, IPX5 Rated, USB, MP3, AM/FM Radio Receiver - Image 2](https://m.media-amazon.com/images/I/81rvkVEM4hL.jpg)
![BOSS Audio Systems MGR300B Marine Boat Stereo Sound System Head Unit - No CD Player, Bluetooth Audio, IPX5 Rated, USB, MP3, AM/FM Radio Receiver - Image 3](https://m.media-amazon.com/images/I/81zumvehg0L.jpg)
![BOSS Audio Systems MGR300B Marine Boat Stereo Sound System Head Unit - No CD Player, Bluetooth Audio, IPX5 Rated, USB, MP3, AM/FM Radio Receiver - Image 4](https://m.media-amazon.com/images/I/81a6GLGBiwL.jpg)
![BOSS Audio Systems MGR300B Marine Boat Stereo Sound System Head Unit - No CD Player, Bluetooth Audio, IPX5 Rated, USB, MP3, AM/FM Radio Receiver - Image 5](https://m.media-amazon.com/images/I/81peIULvdgL.jpg)

## Questions & Answers

**Q: Is the light and the time suppose to stay on constantly?**
A: Hello Cade,
There are 2 links below which should help to answer your question.
The 1st will guide you to a user manual.
The 2nd is a link to Boss Support

https://bossaudio.com/product/mgr300b/
https://support.bossaudio.com/hc/en-us

**Q: Do I just need a couple of speakers and some speaker wire to install?**
A: Yes you need speakers and wire

**Q: Can i just hook it up to my amp, instead of using the head unit outputs?**
A: Hello Tanner,
 Yes, you can use the pre-amp outputs to connect to your amplifier.

Please see the link below for more information.

https://bossaudio.com/product/mgr300b/

**Q: Besides the volume knob, what’s the difference between this and the boss 350b? There are no reviews anywhere**
A: Hi Dedmon9

The 350b has an RDS Tuner, where the 300b doesn't.

("RDS" stands for "Radio Data System" and it allows FM broadcasters to send far more than just an analog audio signal out over the air waves. Using a 57 kHz "subcarrier," stations can transmit digital RDS data for reception by RDS-equipped FM tuners).

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by L***S on 28 November 2024*

Muy buen producto; cumple con lo que promete.

### ⭐⭐⭐⭐⭐ Review
*by J***S on 26 December 2025*

Sounds great and easy to install! Has been on the boat for 3 years now and still working great!

### ⭐⭐⭐⭐⭐ Review
*by A***E on 13 June 2024*

Es práctico para instalar y no necesitamos gran cosa, cumple sus funciones al cien 😃

## Frequently Bought Together

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- BOSS Audio Systems MR6B 6.5 inch Marine Stereo Boat Speakers - 180 Watts (pair), 2 Way, Full Range, Tweeters, Coaxial, Weatherproof, Sold in Pairs

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-08*