Fusion Apollo MS-RA770
A four-zone touchscreen stereo with built-in Wi-Fi, for larger boats with several amplified areas. The RA800 fits the same hole and is the newer choice.
Amazon $744.79$744.79
The Fusion Apollo MS-RA770 is the better marine stereo overall, rated 4.5 to 3.1. The Fusion Apollo MS-RA770 leads on zones, features and pre-amp outputs. The Fusion Apollo MS-SRX400 costs $344.80 less ($399.99 vs $744.79).
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.
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
Which should you buy?
- Choose the Fusion Apollo MS-RA770 for zones (4 zones vs single zone), features (NMEA 2000, SiriusXM-ready, phone app, Wi-Fi or AirPlay 2, Bluetooth, USB playback vs phone app, Wi-Fi or AirPlay 2, Bluetooth) and pre-amp outputs (8 RCA output sets vs 2 RCA output sets).
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-RA770 | Fusion Apollo MS-SRX400 |
|---|---|---|
| Overall rating | 4.5/5 | 3.1/5 |
| Amplifier power 20% | 46 26 W RMS x 4 at 4 ohm | 46 26 W RMS x 2 at 4 ohm |
| Zones 15% | 100 4 zones | 0 single zone |
| Pre-amp outputs 10% | 100 8 RCA output sets | 14 2 RCA output sets |
| Features 25% | 85 NMEA 2000, SiriusXM-ready, phone app, Wi-Fi or AirPlay 2, Bluetooth, USB playback | 40 phone app, Wi-Fi or AirPlay 2, Bluetooth |
| Water rating 10% | 100 IPX6/IPX7 front | 100 IPX7 front |
| Display 10% | 100 4.3 in color touchscreen | 58 2.7 in color |
| Warranty 10% | 100 3-year warranty | 100 3-year warranty |
Specifications
| Fusion Apollo MS-RA770 | Fusion Apollo MS-SRX400 | |
|---|---|---|
| Audio | ||
| Amplifier power (RMS, 4 ohm) | 26 W x 4 RMS | 26 W x 2 RMS |
| Zones | 4 | 1 |
| RCA output sets | 8 | 2 |
| Sources and control | ||
| Bluetooth | Yes | Yes |
| USB playback | Yes | No |
| Phone app | Yes | Yes |
| SiriusXM-ready | Yes | No |
| NMEA 2000 | Yes | No |
| Wi-Fi or AirPlay 2 | Yes | Yes |
| Weather band | No | No |
| DAB+ | Yes | No |
| CD player | No | No |
| Camera input | No | No |
| Build | ||
| Mount | Panel cutout | Panel cutout |
| Front water rating | IPX6/IPX7 | IPX7 |
| Display | 4.3 in color touch | 2.7 in color |
| Warranty | 3 years | 3 years |