Clarion CMM-30
A four-zone stereo with chartplotter control for well under the price of an Apollo. It suits a boat that will add amplifiers zone by zone.
Amazon $427.86$427.86
The Clarion CMM-30 is the better marine stereo overall, rated 3.6 to 2.3. The Clarion CMM-30 leads on zones, amplifier power and features. The Pioneer MVH-MS512BS costs $247.87 less ($179.99 vs $427.86).
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.
Pioneer MVH-MS512BS
#18 in Dash and panelFull review
A budget single-DIN receiver for a boat, cart or UTV that will run an external amplifier. Its own amplifier is too weak to drive marine speakers loudly.
Amazon $179.99$179.99
Which should you buy?
- Choose the Clarion CMM-30 for zones (4 zones vs single zone), amplifier power (25 W RMS x 4 at 4 ohm vs 14 W RMS x 4 at 4 ohm) and features (NMEA 2000, SiriusXM-ready, weather band, Bluetooth, USB playback vs SiriusXM-ready, phone app, Bluetooth, USB playback).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every dash and panel marine stereo; a clear win is highlighted. How we rank explains each one.
| Factor weight | Clarion CMM-30 | Pioneer MVH-MS512BS |
|---|---|---|
| Overall rating | 3.6/5 | 2.3/5 |
| Amplifier power 20% | 42 25 W RMS x 4 at 4 ohm | 0 14 W RMS x 4 at 4 ohm |
| Zones 15% | 100 4 zones | 0 single zone |
| Pre-amp outputs 10% | 43 4 RCA output sets | 29 3 RCA output sets at 4 V |
| Features 25% | 70 NMEA 2000, SiriusXM-ready, weather band, Bluetooth, USB playback | 50 SiriusXM-ready, phone app, Bluetooth, USB playback |
| Water rating 10% | 70 IP66 front | 50 front water rating not published (neutral score used) |
| Display 10% | 66 3 in color | 30 monochrome display, size not published |
| Warranty 10% | 0 1-year warranty | 0 1-year warranty |
Specifications
| Clarion CMM-30 | Pioneer MVH-MS512BS | |
|---|---|---|
| Audio | ||
| Amplifier power (RMS, 4 ohm) | 25 W x 4 RMS | 14 W x 4 RMS |
| Zones | 4 | 1 |
| RCA output sets | 4 | 3 at 4 V |
| Sources and control | ||
| Bluetooth | Yes | Yes |
| USB playback | Yes | Yes |
| Phone app | No | Yes |
| SiriusXM-ready | Yes | Yes |
| NMEA 2000 | Yes | 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 | Panel cutout | Single DIN |
| Front water rating | IP66 | - |
| Display | 3 in color | Monochrome |
| Warranty | 1 year | 1 year |