BOSS Audio Systems MGR350B Marine Boat Stereo Gauge Receiver – Bluetooth Head Unit, No CD DVD Player, Built-in 4 Channel Amplifier, Weatherproof, USB, USB Charging
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This item is eligible for return within 30 days of receipt
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Availability:
In Stock.
Arrives
Sunday, Aug 31
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Style: MGR350B Receiver
Features
- Bluetooth - Play and control music through your smartphone or MP3 player as well as apps like Spotify / Pandora, wirelessly
- Weatherproof - The MGR350B has been outfitted with the latest weatherproofing techniques such as front panel UV coating, PC board with conformal coating. It has an IPX 6 rating for protection against splashing water
- Inputs - The USB port gives you the option to have a vast library of audio files at your fingertips. The auxiliary input is compatible with audio output from smartphones and MP3 players. USB charging
- Outputs - Use the front & rear or subwoofer pre-amp outputs to hook up your speakers or subwoofer. Specs - Dimensions: 3.5 x 3.5 x 3.8, Weight: 1.1 lbs., 60 watts x 4 channels
Description
BOSS Audio Systems MGR350B Marine Boat Stereo Gauge Receiver – Bluetooth, No CD DVD Player, Built-in 4 Channel Amplifier, Weatherproof, USB, USB Charging
Brand: BOSS Audio Systems
Connectivity Technology: Bluetooth, USB
Controller Type: iOS, Android
Special Feature: Built-In Bluetooth, Weatherproof, Marine IPX 6 Rated, NOAA Weather Band Tuner, No CD/DVD
Compatible Devices: Smartphone
Connector Type: USB 1.0
Audio Encoding: Stereo
Audio Output Mode: Stereo
Color: Black
Product Dimensions: 3.5"D x 3.8"W x 3.5"H
Product Dimensions: 3.8 x 3.5 x 3.5 inches
Item Weight: 1.1 pounds
Item model number: MGR350B
Batteries: 1 AAA batteries required.
Is Discontinued By Manufacturer: No
Date First Available: April 21, 2015
Manufacturer: BOSS Audio Systems
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Aug 31
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Style: MGR350B Receiver
I cannot believe how good this cheap thing is. I put this in my parent boat and honestly, it sounds as good as the $800 radio I have in my boat. So happy with it. Holding up to the south Florida sun, pretty easy to use for my parents and again, it has power you wouldn't expect to get out of something this small with virtually no heat sink.
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Reviewed in the United States on June 22, 2025 by Trial N' Error
Style: MGR350B Receiver
Easy to replace old unit with this one. Standard connect color codes used. Bluetooth connects easily and easy to navigate on screen menu. Powerful unit without need for external amp.
Reviewed in the United States on June 9, 2025 by Mike Varadi
Style: MGR350B Receiver
Installed on my boat no issues works well
Reviewed in the United States on May 24, 2025 by rabbit
Style: MGR350B Receiver
Boss marine BT radio sound is ok. Sound quality is not at level of JBL gauge radios but it's much cheaper and after having 3 JBL radios (2 models) fail, I was motivated to try something new. This Boss radio diameter was way smaller & fit through my existing gauge radio hole. I made a circular adapter from a cup holder ss trim (with a flange to keep it centered). Seller was excellent, and the radio is good. Radio has an RCA pair for "front line out" and a "rear line out or sub-woofer". I have a sub-woofer and an amp (for which I wanted both RCA pairs for a front and rear lines out). My amp had an extra output line, so I used that for the sub-woofer, but I wished I had another sub-woofer RCA pair on the radio.
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Reviewed in the United States on July 14, 2023 by Kim
Style: MGR350B Receiver
it works great now. when i first hooked it up i was getting no power so i called customer support and told them my problem. he said splice the red ground wire to the negative ground to the battery and it should work. i tried this and the power came on and it worked perfectly. he told me that they forget to mention this in the setup directions. i am very happy with the unit.
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Reviewed in the United States on May 25, 2025 by thomas fischer
Style: MGR350B Receiver
This is my second BOSS. The first one was still playing strong after 2 years of use and abuse in our boat. (We normally use every weekend 9 months out of the year. Got to love Florida. The old radio was still going strong until user error caused it to pop an internal amp or driver. (I was installing a new battery in a tight space and hooked the negative and positive backwards. (Yes there was some choice words said for not paying attention on my part.) The radio pushes the 2 6.5" speakers well. It does distort at full volume but for the money it does great. It's plenty loud at full throttle (still running a 2 stroke motor.) For out of the box easy install I would definitely recommend.
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Reviewed in the United States on November 23, 2024 by shannon avera
Style: MGR350B Receiver
NEW UPDATE - GOT JUST ABOUT TWO WEEKS OF GOOD SOUND, WAS HAPPY WITH THE RADIO, UNTIL TODAY - PLAYING FINE , HAD SOME STATIC THEN RADIO QUIT ALL SOUND. STILL LIGHTS UP , SHOWS WHICH STATION, BUT NO SOUND AT ALL - TRIED BLUETOOTH SHOWS SONG PLAYING ON DISPLAY BUT NO SOUND AT ALSO. TRIED RESETTING ALL SETTING BUT NO SOUND OTHER THAN MINOR CRACKLE WHEN TURNED ON . SO NOW I HAVE A THREE INCH HOLE IN MY DASH, WITH A DEFECTIVE RADIO. AGAIN Wanted to post an update- ordered a replacement MGR350B and hooked it up to the same speakers but on "the bench " and the new radio plays GREAT. Can even you ent on the "Xbass" setting and it plays. So it turn out I got a bad radio, lesson learned to bench test before soldering and installing the right way and make sure it works. I have literally installed DOZENS of radios over the past 40+ years and have never had a problem. Now I get to do this the HARD way, either under the hood of a utv with wires cut to lenght or start completely over again and cut it all back out. This sucks, but at least I found the problem. But with a broken back and psoriatic arthritis this is really going to be painful to do under the hood. After spending all afternoon soldering and heat shrinking and making sure all connections are secure, I place it in the dash turn it on and it does play. Try to set the eq sound and any bass over 3 and half volume causes major sound distortion. Changed settings around and have found that this head unit just does not have enough output power to drive four speakers with any decent sound. Even disconnecting one pair or the other it does the same thing just with a little more volume than with four speakers connected. Any bass combined with any volume causes the sound to completely fail. I have the same speaker set up on my EZGO with a Sony head unit and it rocks no problem. The dash on Trail Wagon utv has no space to use a din radio so I had to go with a gauge style like this which fits and looks great but sounds terrible. Now after doing a professional soldered, double heat shrinked install ,all wrapped in taped secured so no branches can undo anything on a trail I'll have to go back in and cut it all back out under the dash and rewire for an amp under the dash. I had a good laugh turning on the XBass setting, this unit just said- no, with any volume over 10 it just cuts out. No power to drive speakers. At LOW volume this is a nice unit, you can get good sound. Going to put an amp in and see what happens, now that I have a three inch hole in the dash I kind of have to try to get the sound I want out of this unit. It does look good but it needs to sound good as well. I'll update after I get the amp in. Out of curiosity maybe Amazon and sent me a bad new speaker, I hooked them up on my EZGO with the Sony head unit and they played fine. I was really hoping this unit would work fine without an amp because I don't wanna add another device in the electrical system to add more draw. Maybe I got a bad radio? I see a bunch of the reviews bragging on how loud it is.
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Reviewed in the United States on September 22, 2018 by Rattler
Style: MGR350B Receiver
Works as described
Reviewed in the United States on May 19, 2025 by Bryan C