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🌊 Ride the waves with sound that’s as unstoppable as you are!
The BOSS Audio Systems MGR350B is a compact, weatherproof marine Bluetooth receiver delivering 240 watts across 4 channels. Designed for boaters who demand premium sound and durability, it features IPX6 splash resistance, USB charging, and seamless wireless streaming from top apps like Spotify and Pandora. Backed by a 3-year platinum warranty, this unit combines professional-grade installation ease with powerful audio performance for the ultimate on-water entertainment experience.













| ASIN | B00VV6Y7O2 |
| Audio Encoding | Stereo |
| Audio Output Mode | Stereo |
| Audio Output Type | Speakers |
| Best Sellers Rank | #4,529 in Electronics ( See Top 100 in Electronics ) #2 in Marine Stereo Receivers |
| Brand | BOSS Audio Systems |
| Built-In Media | Metal Bracket, Hexagon Mounting Studs, M4 Secure Nuts |
| Color | Black |
| Compatible Devices | Amplifier, Smartphone, Speaker |
| Connectivity Technology | Auxiliary , Bluetooth, USB |
| Connector Type | RCA |
| Control Method | Push Button |
| Controller Type | Android, iOS |
| Customer Reviews | 4.4 out of 5 stars 2,455 Reviews |
| Format | WMA |
| Global Trade Identification Number | 00791489122979 |
| Item Dimensions D x W x H | 3.86"D x 3.54"W x 3.54"H |
| Item Type Name | BOSS Audio Systems MGR350B |
| Item Weight | 1.5 pounds |
| Manufacturer | BOSS Audio Systems |
| Mfr Part Number | MGR350B |
| Model Number | MGR350B |
| Number of Channels | 4 |
| Number of Items | 1 |
| Other Special Features of the Product | Built-In Bluetooth, No CD DVD Player, USB, USB Charging, Weatherproof |
| Output Power | 240 watts |
| Output Wattage | 240 watts |
| Software Update Supported to Date | unknown |
| Special Feature | Built-In Bluetooth, No CD DVD Player, USB, USB Charging, Weatherproof |
| Supported Internet Services | Spotify, Pandora |
| UPC | 791489122979 |
| Unit Count | 1 Count |
| Warranty Description | 3 Year Platinum Online Dealer Warranty valid only on products Sold / Shipped by Amazon.com. This offer is not valid on purchases made from third party market place sellers |
| Wattage | 240 watts |
A**E
Sounds great.
Drives four 6.5’s like a champ. Good reception. Good BT connectivity. Happy customer.
K**G
Good Sound quality for the price.
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.
S**A
Good radio for the price.
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.
C**R
Round model does not come with antenna, has non-volatile memory (keeps settings)
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.
C**E
I use this device in my 2200xls Nautic Star boat.
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.
A**F
Easy install!
Perfect addition to our boat!
R**R
2ND UPDATE- ALL AUDIO QUIT Update- It was a bad radio
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.
R**4
Longevity
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.
H**N
Très beau , bonne qualité et fonctionne parfaitement bien
Facile à installer et il fonctionne très bien
S**D
جيد
جيد
Z**O
OK. 100 %
OK. 100 %
Z**O
Good quality and original boss
I like it good sounds and very clear sounds I like Amazon
A**E
Un buen sonido y amplificación
Excelente producto
Trustpilot
1 month ago
2 weeks ago