Is the light and the time suppose to stay on constantly?

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

Can i just hook it up to my amp, instead of using the head unit outputs?

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/

Besides the volume knob, what’s the difference between this and the boss 350b? There are no reviews anywhere

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).

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Description

🎶 Ride the waves with sound that never quits!

WEATHERPROOF IPX 5 DESIGN - Keep the party going rain or shine—this receiver laughs in the face of splashes and sprays.
COMPACT EASY INSTALLATION - Sleek 9.5 x 11.5 cm design fits perfectly in your boat’s dashboard with hassle-free setup.
IMMERSIVE 240 W STEREO POWER - Feel every beat with crystal-clear, room-filling sound that dominates your marine adventures.
SEAMLESS BLUETOOTH STREAMING - Wirelessly connect your devices and stream your favorite playlists effortlessly, no cables needed.
UNIVERSAL USB AUX COMPATIBILITY - Plug in any USB or 3.5mm device and enjoy instant access to your music library.

The BOSS Audio Systems MGR300B is a robust marine-grade digital media receiver delivering 240 watts of stereo power. Featuring IPX5 waterproof protection, built-in Bluetooth for wireless streaming, and versatile USB and aux inputs, it’s engineered for seamless, high-quality audio on the water. Compact and easy to install, it’s the ultimate sound companion for any boat enthusiast.

Specifications

ASIN	B09TRZZJSH
Audio Encoding	Windows Media Audio (WMA)
Audio Output Mode	Stereo
Audio Output Type	Speakers
Brand	BOSS Audio Systems
Brand Name	BOSS Audio Systems
Colour	black
Compatible Devices	[Compatible with: BOSS audio systems, USB devices and other devices with audio connectivity
Connectivity technology	USB
Connector Type	3.5mm Jack, USB Type A
Connector type	3.5mm Jack , USB Type A
Control Method	Remote
Controller Type	Push Button
Controller type	Push Button
Customer Reviews	4.5 out of 5 stars 155 Reviews
Format	CD
Item Dimensions D x W x H	9.5D x 11.5W x 11.5H centimetres
Item Weight	1.34 Pounds
Manufacturer	BOSS Audio Systems
Model Number	MGR300B
Network Connectivity Technology	USB
Number of Channels	4
Other Special Features of the Product	Built-In Bluetooth
Output Power	240 Watts
Output Wattage	240 Watts
Special feature	Built-In Bluetooth
Surround Sound Channel Configuration	4.0
UPC	791489132534
Wattage	240 watts
Wireless Technology Type	Bluetooth

Reviews

L**S

Excelente

Muy buen producto; cumple con lo que promete.

28.11.2024

J**S

Good craftsmanship!!

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

26.12.2025

A**E

Cumple sus funciones y llega rápido 🫡

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

13.06.2024

F**S

Decepción

No funciona el radio, trae un corto de fábrica. Y se calienta. Necesito devolverlo para que me lo cambien y no veo opción aquí

15.06.2024

D**.

Falla

Se desconecta del blutooht tocando el estério sin moverle a nada

31.10.2025

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