Our verdict
The Fusion MS-RA670 delivers reliable, marine-grade audio performance with rugged waterproofing and flexible network integration, making it a strong choice for boaters who want dependable sound and expandable zone control without constant worry about the elements.
Why it made the list
- Fully waterproof design
- Multi-zone audio control
- Seamless Bluetooth streaming
Pros & cons
What we like
- Fully sealed against saltwater spray and rain
- Seamless smartphone pairing with no app required
- Expands easily to whole-boat multi-zone audio
- Compatible with Fusion-Link app for remote control
- Bright sunlight-readable display
Watch out for
- Requires separate amplifier for larger speaker setups
- NMEA network wiring can be complex for beginners
- Premium price compared to basic marine stereos
- No built-in Wi-Fi for firmware updates
Spec sheet
| Waterproof Rating | IPX6/IPX7 |
|---|---|
| Power Output | 4 x 50W |
| Connectivity | Bluetooth 5.0, NMEA 2000/0183 |
| Display | Sunlight-readable LCD |
| Audio Zones | 4-zone |
Features at a glance
- Bluetooth 5.0 streaming with auto-reconnect
- IPX6/IPX7 waterproof and UV-resistant housing
- NMEA 2000 and NMEA 0183 network compatibility
- Built-in 4-zone audio control with optical output
- AM/FM tuner with weatherband and SiriusXM ready
- Active balanced inputs for extended cable runs
Full review
The Fusion marine stereo system is purpose-built for life on the water, engineered to deliver crisp, powerful audio even in the harshest marine environments. Housed in a fully waterproof and UV-resistant chassis, the head unit resists salt spray, humidity, and direct sunlight without degrading in performance or appearance. Boaters can stream music wirelessly via Bluetooth from a phone or tablet, tune into AM/FM radio, or connect external media sources, all through an intuitive interface with a bright, glare-free display that remains readable under open sky conditions. The rugged knobs and buttons are designed for easy operation even with wet hands or boating gloves, ensuring reliable control while underway.
Beyond the head unit itself, the Fusion system integrates seamlessly with a full range of marine-grade speakers, subwoofers, and amplifiers, allowing boat owners to customize their sound setup from a cozy cabin cruiser to a larger multi-zone vessel. Zone control technology lets users independently manage volume and source selection across different areas of the boat, such as the helm, cockpit, and cabin, so guests can enjoy their preferred ambiance without disrupting the captain's settings. The speakers themselves are built with corrosion-resistant hardware and marine-certified cones that maintain clarity and depth whether docked at the marina or cruising offshore, standing up to constant exposure to water, wind, and sun.
Smart connectivity rounds out the Fusion marine stereo experience, with many models supporting NMEA 2000 networking so the stereo can integrate with onboard chartplotters and other marine electronics for unified control from a single display. Optional smartphone apps extend functionality further, letting users adjust settings, check source status, or control multiple zones remotely from anywhere on deck. Built with boaters in mind, the system emphasizes durability, intuitive usability, and rich sound quality, transforming any time spent on the water into an immersive audio experience, whether for a quiet sunset sail or a lively day of entertaining guests at anchor.
Ready to rig it?
Fusion MS-RA670 Marine Stereo System
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