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
The BOSS Audio MGR350B is the better marine stereo overall, rated 2.7 to 2.2. The BOSS Audio MGR350B leads on features, water rating and pre-amp outputs. The JBL PRV-175 costs $21.56 less ($157.38 vs $178.94).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
JBL PRV-175
#10 in Gauge-holeFull review
A basic gauge-hole stereo for a small boat or cart that needs Bluetooth and radio and little else.
Amazon $157.38$157.38
Which should you buy?
- Choose the BOSS Audio MGR350B for features (weather band, Bluetooth, USB playback vs Bluetooth, USB playback), water rating (IPX6 front vs IPX5 front) and pre-amp outputs (3 RCA output sets vs 2 RCA output sets at 2 V).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every gauge-hole marine stereo; a clear win is highlighted. How we rank explains each one.
| Factor weight | BOSS Audio MGR350B | JBL PRV-175 |
|---|---|---|
| Overall rating | 2.7/5 | 2.2/5 |
| Amplifier power 20% | 50 RMS power at 4 ohm not published (neutral score used) | 23 20 W RMS x 4 at 4 ohm |
| Zones 15% | 0 single zone | 0 single zone |
| Pre-amp outputs 10% | 29 3 RCA output sets | 14 2 RCA output sets at 2 V |
| Features 25% | 35 weather band, Bluetooth, USB playback | 20 Bluetooth, USB playback |
| Water rating 10% | 70 IPX6 front | 40 IPX5 front |
| Display 10% | 50 display not published (neutral score used) | 50 display not published (neutral score used) |
| Warranty 10% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
Specifications
| BOSS Audio MGR350B | JBL PRV-175 | |
|---|---|---|
| Audio | ||
| Amplifier power (RMS, 4 ohm) | - | 20 W x 4 RMS |
| Zones | 1 | 1 |
| RCA output sets | 3 | 2 at 2 V |
| Sources and control | ||
| Bluetooth | Yes | Yes |
| USB playback | Yes | Yes |
| Phone app | No | No |
| SiriusXM-ready | No | No |
| NMEA 2000 | No | No |
| Wi-Fi or AirPlay 2 | No | No |
| Weather band | Yes | No |
| DAB+ | No | No |
| CD player | No | No |
| Camera input | No | No |
| Build | ||
| Mount | Gauge hole | Gauge hole |
| Front water rating | IPX6 | IPX5 |