The flagship pick for a large boat that wants four zones, Wi-Fi streaming and real power from the head unit itself. Skip it if you listen to SiriusXM.
Amazon $999.99
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.
- 26 W x 4 RMSPower
- 4Zones
- IPX6/IPX7Water rating
- 4.3 in color touchDisplay
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
- 4.3 in touchscreen with swipe controls
- Built-in Wi-Fi for AirPlay 2 with no extra router
- Four zones with line and subwoofer outputs each
- Three-year warranty
- Replaced by the RA800, which has more amplifier power at a similar price
- Same 26 W per channel as the cheaper RA210
The Fusion Apollo family
Every Fusion Apollo model we rank, smallest first. Ratings compare each against its own mount.
| Model | Power | Rating | Price |
|---|---|---|---|
| Fusion Apollo MS-SRX400 | 26 W x 2 RMS | 3.1/5 | $399.99 |
| Fusion Apollo MS-RA670 | 26 W x 4 RMS | 4.1/5 | $549.99 |
| Fusion Apollo MS-RA770 (this one) | 26 W x 4 RMS | 4.5/5 | $744.79 |
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 | MS-RA770 (010-01905-00) |
|---|---|
| Audio | |
| Amplifier power (RMS, 4 ohm) | 26 W x 4 RMS |
| Zones | 4 |
| RCA output sets | 8 |
| Sources and control | |
| Bluetooth | Yes |
| USB playback | Yes |
| Phone app | Yes |
| SiriusXM-ready | Yes |
| NMEA 2000 | Yes |
| Wi-Fi or AirPlay 2 | Yes |
| Weather band | No |
| DAB+ | Yes |
| CD player | No |
| Camera input | No |
| Build | |
| Mount | Panel cutout |
| Front water rating | IPX6/IPX7 |
| Display | 4.3 in color touch |
| Warranty | 3 years |
Alternatives in this mount
An Apollo-series stereo in the compact Fusion cutout, for a boat with up to three amplified zones. Buy it over the RA210 for the third zone, the networking and the longer warranty.
Amazon $549.99A 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 $427.86Compare
Compare the Fusion Apollo MS-RA770 with any other marine stereo →
More from Fusion: every Fusion product ranked.