Fusion Apollo MS-SRX400
A zone stereo for a second listening area on a boat that already has an Apollo RA670, RA770 or RA800. As the only stereo on board it gives up too much.
Amazon $399.99$399.99
The Fusion Apollo MS-SRX400 and the Wet Sounds WS-MC-20 are evenly matched, rated 3.1 and 3.1. The Wet Sounds WS-MC-20 wins on zones and features. The Fusion Apollo MS-SRX400 costs $59 less ($399.99 vs $458.99).
Prices were last checked November 11, 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.
Wet Sounds WS-MC-20
A compact two-zone Wet Sounds receiver for a wake boat with a chartplotter. Its listing publishes too few numbers to rank it high.
Amazon $458.99$458.99
Which should you buy?
- Choose the Wet Sounds WS-MC-20 for zones (2 zones vs single zone) and features (NMEA 2000, SiriusXM-ready, weather band, Bluetooth vs phone app, Wi-Fi or AirPlay 2, Bluetooth).
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 | Fusion Apollo MS-SRX400 | Wet Sounds WS-MC-20 |
|---|---|---|
| Overall rating | 3.1/5 | 3.1/5 |
| Amplifier power 20% | 46 26 W RMS x 2 at 4 ohm | 50 RMS power at 4 ohm not published (neutral score used) |
| Zones 15% | 0 single zone | 33 2 zones |
| Pre-amp outputs 10% | 14 2 RCA output sets | 50 pre-amp outputs not published (neutral score used) |
| Features 25% | 40 phone app, Wi-Fi or AirPlay 2, Bluetooth | 60 NMEA 2000, SiriusXM-ready, weather band, Bluetooth |
| Water rating 10% | 100 IPX7 front | 50 front water rating not published (neutral score used) |
| Display 10% | 58 2.7 in color | 50 display not published (neutral score used) |
| Warranty 10% | 100 3-year warranty | 0 warranty not published, scored as none |
Specifications
| Fusion Apollo MS-SRX400 | Wet Sounds WS-MC-20 | |
|---|---|---|
| Audio | ||
| Amplifier power (RMS, 4 ohm) | 26 W x 2 RMS | - |
| Zones | 1 | 2 |
| RCA output sets | 2 | - |
| Sources and control | ||
| Bluetooth | Yes | Yes |
| USB playback | No | - |
| Phone app | Yes | No |
| SiriusXM-ready | No | Yes |
| NMEA 2000 | No | Yes |
| Wi-Fi or AirPlay 2 | Yes | No |
| Weather band | No | Yes |
| DAB+ | No | No |
| CD player | No | No |
| Camera input | No | No |
| Build | ||
| Mount | Panel cutout | - |
| Front water rating | IPX7 | - |
| Display | 2.7 in color | - |
| Warranty | 3 years | - |