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BOSS Audio Systems

BOSS Audio Systems MGR350B Amplified Bluetooth Boat Gauge Receiver, No DVD

Based on 2,457 reviews
Condition: New
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$139.99
Save $67.69 was $207.68

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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Oct 30
Order within 10 hours and 47 minutes

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At a glance

Condition
New
Style
MGR350B Receiver
Model
MGR350B
Dimensions
3.86"D x 3.54"W x 3.54"H
Weight
1.5 lb
Color
Black
Controller Type
Android, iOS
Works with
Amplifier, Smartphone, Speaker

Features 4

  • 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

Specs 30

Brand BOSS Audio Systems
Connectivity Technology Auxiliary, Bluetooth, USB
Controller Type Android, iOS
Special Feature Built-In Bluetooth, No CD DVD Player, USB, USB Charging, Weatherproof
Connector Type RCA
Audio Encoding Stereo
Audio Output Mode Stereo
Color Black

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Oct 30

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.

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Top Amazon Reviews

Sounds great.
Style: MGR350B Receiver
Drives four 6.5’s like a champ. Good reception. Good BT connectivity. Happy customer.
Reviewed in the United States on September 4, 2026 by A.T. Lawrence
Good Sound quality for the price.
Style: MGR350B Receiver
I have had no issues. Been using it for some over a year now and it still works great. great sound quality. good bang for your money.
Reviewed in the United States on July 30, 2026 by Karl G
Good radio for the price.
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. ... show more
Reviewed in the United States on November 23, 2024 by shannon avera
Round model does not come with antenna, has non-volatile memory (keeps settings)
Style: MGR350B Receiver
Things to know that are confusing about the product description, reviews, and QA on this page: 1 - The round one does not come with an antenna. An antenna is not mentioned anywhere on the box or in the manual. I do not know why there are so many QA questions stating that it DOES come with an antenna. 2 - The switched-power-on wiring is pointless; the unit has non-volatile memory, so it doesn't lose clock, bluetooth or radio settings when completely disconnected from power. I'd suggest you wire both power leads together. This is really important if you use a battery switch or breaker panel to disconnect everything when you are away from the boat. Other than these things that I wish I could have confirmed before I bought it: It's fine. It sounds okay, the interface and menus are okay, the installation instructions are okay. It feels pretty cheap in operation, but it does function. I installed it immediately and it has had a week of being in very, very hot and humid conditions inside my boat and there have been no issues. When it dies, I would be 50/50 on replacing it with the same model or spending more for a different design. Power draw seems very low in operation. ... show more
Reviewed in the United States on August 29, 2019 by Cape Dory Sailor
I use this device in my 2200xls Nautic Star boat.
Style: MGR350B Receiver
The first Boss unit that came in my boat lasted about eight years. Because the hole was already in the dash I replaced it with this Boss unit. It's been several years now and it has held up well. I use it primarily with bluetooth, it connects very easily and does the job.
Reviewed in the United States on September 18, 2026 by Charlie
Easy install!
Style: MGR350B Receiver
Perfect addition to our boat!
Reviewed in the United States on July 13, 2026 by AMaeF
2ND UPDATE- ALL AUDIO QUIT Update- It was a bad radio
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. ... show more
Reviewed in the United States on September 22, 2018 by Rattler
Longevity
Style: MGR350B Receiver
This is my second purchase of this product. First purchase was 6 years ago and with all the weather conditions I put it through I was impressed with how long it lasted so much that i bought a second one.
Reviewed in the United States on September 25, 2026 by rram1234
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