BOSS Audio MGR350B
#6 in Gauge-holeFull review
A step up from the MGR300B for a gauge-hole install, with better water resistance, a weather band and a subwoofer output.
Amazon $178.94$178.94
1Gauge hole
2.6/5
An inexpensive gauge-hole Bluetooth receiver for a golf cart, UTV or small boat, with room to add an amplifier.
- 2Zones
- 2.8 in colorDisplay
Check price at Amazon$164.99
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Fits a 3 in gauge hole with a color screen
- Zone 2 level control and three sets of pre-outs
- Under $170
Cons
- No USB music playback or SiriusXM
- No water rating published
- 1-year warranty
How it scores
The rating comes from 7 measured or published factors, each scored 0-100 against fixed reference points for its mount. How we rank explains each one.
Specifications
| Model number | WS-MC-RND |
|---|---|
| Audio | |
| Zones | 2 |
| RCA output sets | 3 |
| Sources and control | |
| Bluetooth | Yes |
| USB playback | No |
| Phone app | No |
| SiriusXM-ready | No |
| NMEA 2000 | No |
| Wi-Fi or AirPlay 2 | No |
| Weather band | No |
| DAB+ | No |
| CD player | No |
| Camera input | No |
| Build | |
| Mount | Gauge hole |
| Display | 2.8 in color |
| Warranty | 1 year |
Alternatives in this mount
Kenwood KMR-M300BT
#7 in Gauge-holeFull review
A full-featured gauge-hole stereo for a small boat or powersports dash. Spend more on the eXcelon KMR-XM500 only if you want its 5 V pre-outs and longer warranty.
Amazon $299$299
19 W x 4 RMS1Gauge hole
BOSS Audio MGR300B
#9 in Gauge-holeFull review
A cheap gauge-hole Bluetooth stereo for a jon boat, golf cart or UTV. Its IPX5 rating covers splashes, not heavy spray.
Amazon $129.99$129.99
1Gauge hole
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