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).

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

BOSS Audio Systems MGR300B Bluetooth Marine Stereo Gauge Receiver, No DVD

BOSS Audio Systems MGR300B Bluetooth Marine Stereo Gauge Receiver, No DVD

Product ID: 442830234

Details

Audio Encoding
Windows Media
Audio Output Mode
Stereo
Brand
BOSS Audio
Color
Black
Compatible Devices
Android iPhone
Connectivity Technology
Auxiliary USB

📱Bluetooth wireless streaming

🔊240W output power

🌧️IPX5 water & dust resistant

¥43611

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Description

🎵 Command the waves with sound that’s as unstoppable as you are!

IMMERSIVE 240 W SOUND POWER - Feel every wave with crystal-clear, room-filling audio that commands attention on and off the water.
VERSATILE USB AUX INPUTS - Expand your audio library and keep devices charged while enjoying uninterrupted entertainment on the go.
ALL WEATHER READY IPX 5 RATING - Engineered to brave splashes and dust, so your soundtrack never stops, rain or shine.
SEAMLESS BLUETOOTH CONNECTIVITY - Wirelessly stream your favorite playlists from Spotify, Pandora, or your smartphone with effortless control.
NIGHT READY ILLUMINATED CONTROLS - Navigate your music with ease after sunset thanks to a sleek backlit panel designed for low-light environments.

The BOSS Audio Systems MGR300B is a compact, weatherproof marine stereo receiver delivering 240 watts of powerful sound. Featuring Bluetooth streaming, IPX5 water and dust resistance, illuminated controls for night use, and versatile USB and auxiliary inputs, it’s designed for seamless integration with smartphones and MP3 players. Backed by a 3-year platinum warranty, this unit is a reliable, stylish audio solution for any boat enthusiast seeking premium sound performance in all conditions.

Specifications

ASIN	B09TRZZJSH
Audio Encoding	Windows Media Audio (WMA)
Audio Output Mode	Stereo
Audio Output Type	Speakers
Best Sellers Rank	#15,768 in Electronics ( See Top 100 in Electronics ) #10 in Marine Stereo Receivers
Brand	BOSS Audio Systems
Built-In Media	Mounting kit, rubber cover, instruction manual
Color	Black
Compatible Devices	Android, Smartphone, iPhone
Connectivity Technology	Auxiliary , Bluetooth, USB
Connector Type	RCA
Controller Type	Android, iOS
Customer Reviews	4.5 out of 5 stars 182 Reviews
Format	WMA
Item Dimensions D x W x H	3.73"D x 4.53"W x 4.53"H
Item Type 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
Item Weight	1.3 pounds
Manufacturer	BOSS Audio Systems
Mfr Part Number	MGR300B
Model Number	MGR300B
Number of Channels	2
Number of Items	1
Other Special Features of the Product	Built-In Bluetooth
Output Power	240 watts
Output Wattage	240 watts
Software Update Supported to Date	unknown
Special Feature	Built-In Bluetooth
Supported Internet Services	Pandora, Spotify
UPC	791489132534
Unit Count	1 Count
Warranty Description	BOSS Audio Systems provides a powerful 3-year platinum online dealer warranty so long as the purchase is made through Amazon.
Wattage	240 watts
Wireless Technology	AM/FM, Bluetooth

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

¥43611

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

Pooja R.

The customer service exceeded my expectations. Perfect for buying products you can't find elsewhere.

1 week ago

View all Trustpilot reviews