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🌊 Elevate your marine soundscape — weatherproof power meets wireless freedom!
The BOSS Audio Systems MGR350B is a compact, weatherproof marine stereo receiver featuring Bluetooth streaming, 240 watts of 4-channel output, USB playback and charging, and an IPX6 splash-resistant design. Engineered for durability and seamless connectivity, it’s perfect for professionals and enthusiasts seeking premium sound on the water with easy installation and a 3-year warranty.













| ASIN | B00VV6Y7O2 |
| Audio Encoding | Stereo |
| Audio Output Mode | Stereo |
| Audio Output Type | Speakers |
| Best Sellers Rank | #4,420 in Electronics ( See Top 100 in Electronics ) #5 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 2,449 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 |
| 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 |
| 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 |
F**Z
Woke up my audio system
I got this for my Polaris RZR to run my system that includes four 6 1/2” and one 8” subwoofer along with 2 kicker amps, I replaced using the ride command (stock radio) and it woke up my audio system. The quality is good, brightness display screen. Easy to operate being that the buttons are a good size. Has features like builtin EQ, Bluetooth. It’s a good value for your money. I recommend this 10/10
S**H
Good unit, why no power button? - Revised, the mute button is the power button - user error :-)
Unit was installed in a 2015 Can-Am Commander. I had to swap out the dash board, but that was easy. Slight modification to the hole in the dash that was done with a dremmel and sanding bit to just open the hole up a little. Worked great, fits snug and performs well. Sounds pretty good too, even with cheap marine speakers. I cannot see where you can turn the unit off, though. Weird that there isn't a power button. I guess you just mute it when you don't want to hear it. Wires are all clearly labeled so installation and wiring is straight forward. A lot of options on the unit. I added a usb and auxiliary input that I mounted in the glove box. Both just plug into the inputs on the back of the radio. Update - holding the mute button down turns the unit off. My fault. I've bumped up the rating to 5 because of my incompetence!
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.
K**M
Nice inexpensive BT marine gauge radio
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.
T**L
good buy.
Fits 3 inch hole. Blue tooth, USB connection. Weather. Fm radio. Works great. Easy to install. I used only two speakers but 4 is better.
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.
A**R
Works wonderfully!
I woke up this morning, and decided to get to work and install my newly ordered boat radio that I bought a week ago. Yesterday, I opened up the package and quickly breezed through the typical wiring instructions, and then looked at the mounting instructions. I did not have a hole cut in my boat console yet, so I went to the hardware store and purchased a 3" hole saw for my power drill. So this morning I cut the hole, cleaned the area, mounted the radio in about 25 minutes, then wired the radio. I turned on my radio switch on my rocker panel and it came right on. I tuned to a station and it sounded great, and clear. My other radio did not have near the reception that this radio gets. Then I got my phone out, and linked it to the radio...super easy. It is only day one, but so far, hands down, best boat radio ever!
W**F
good radio for my Kawasaki Teryx 2 in combination with good quality roll bar speakers
after slightly shortening the U-mounting bracket to prevent interference with a dashboard cable harness the mechanical installation is quite simple and easy. However a bullet proof electrical installation is time consuming and complex if done properly, (common to all radios in this class) I used automotive type , (offroad vehicle!!!!) waterproof connectors for all wiring so dashboard can be removed, added master on off switch to prevent any battery drainage on my UTV and also installed a marine type high gain wip antenna with excellent results. The Radio is powerfull and delivers surprisingly good sound. The push buttons are somewhat small, forget operating radio when wearing gloves. I pipe my music in via my Samsung S7 or my I pad, works flawlessly. The little USB plug is a bonus. If you are in the market for a small 3" diameter radio give it a look, I like it and would buy again
S**D
جيد
جيد
D**A
Estéreo marino compacto, muy completo
Lo use para una cuatrimoto
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
Trustpilot
3 weeks ago
4 days ago