Fusion Apollo RA670 marine stereo system 3-zone DSP – boat audio

This marine stereo system with DSP delivers tuned, clear audio in three zones on board. It offers a variety of sources, including Bluetooth, USB, AM/FM, and DAB+ compatibility, plus a digital optical input for TV audio in the saloon or cabin. With PartyBus network control and Apple AirPlay 2 streaming via Wi-Fi (when paired with an external router or RA770), you stay in control from anywhere. Over-the-air updates via the Fusion-Link app keep features up to date.

Key Features

• Advanced Digital Signal Processing (DSP) with preset Fusion speaker, sub, and amplifier profiles.
• Three independent audio areas with local volume limits, zone names and switchable zones.
• PartyBus for grouping, zone volume control, and remote power options within the same network.
• Apple AirPlay 2 audio over Wi‑Fi (when paired with external router or RA770).
• Versatile sources: Bluetooth, USB, AM/FM, DAB+ ready, UPnP, MTP, AUX, iPhone/iPod and digital optical SPDIF.
• True‑Marine front panel: Water resistant to IPX6 and IPX7 when properly installed.
• Fusion‑Link app control, NMEA 2000 MFDs, ANT, and Garmin watches (Fusion‑Link Lite).
• Over-the-air software updates via the Fusion-Link app or USB (network required).

Smart zones and seamless connectivity

The built-in Class-D amplifier powers two zones internally; zone 3 requires external amplification. DSP profiles can be quickly configured with the free Fusion-Link app, optimizing playback for each room and speaker profile. A smart limiter helps prevent distortion and protects the system.

PartyBus lets you connect multiple Apollo stereo units to a single network for synchronized sound or independent playback in each area. Want TV sound in the cabin? Simply connect the digital optical input. With AirPlay 2, you can stream from a compatible Apple device over Wi-Fi when the system is connected to an external router or RA770.

Specifications

• Brand: Fusion
• Display: 6.86 cm (2.7 in) optically bonded color LCD
• Zones: 3 (zones 1 and 2 via internal amplifier; zone 3 requires external amplification)
• Amplifier: Class-D
• Rated Power (4 Ω): 26 W RMS x4 @ 14.4 V (< 10% THD)
• Rated Power (2 Ω): 43 W RMS x4 @ 14.4 V (< 10% THD)
• Peak power: 280 W max
• DSP: Yes; Fusion speaker, sub, and amplifier profiles available
• PartyBus: Yes (wired or wireless when connected to an external router or RA770)
• Bluetooth: Audio streaming and control (A2DP/AVRCP 1.3)
• Wi-Fi: Yes (when integrated with external router or RA770)
• Apple AirPlay 2: Supported via Wi-Fi with network integration
• ANT: Yes
• NMEA 2000 (MFD control): Yes (Fusion-Link)
• Compatible with NRX remote controls: Yes
• Sources: AM/FM, Bluetooth, Apple AirPlay 2, Digital Optical Input, USB Audio, iPhone/iPod, AUX, UPnP, MTP, SiriusXM‑Ready (US), DAB+ Ready (region dependent)
• Digital optical input: 1x SPDIF
• AUX input: 1x RCA
• USB 2.0: 1 port (charging and media display)
• Ethernet: 1 port
• SiriusXM: 1 port (optional tuner required; no traffic/weather; US only)
• AM/FM antenna: 1x Motorola connector
• Speaker channels: 4 channels (1 pair per zone; sub and full-range line-outs require external amplification)
• RCA pre-outs: 3 zones (L+R per zone, 1x Sub per zone; external amplification required)
• Operating voltage: +10.8 – 16 V DC
• Front water resistance: IPX6 and IPX7 (when installed correctly)
• DIN mounting: Yes, with optional adapter plate 010‑12829‑03
• Physical dimensions (front incl. volume knob): 157 x 68 x 123 mm (6‑3/16" x 2‑11/16" x 4‑7/8")
• Installation dimensions (cut-out): 135 x 52 x 105 mm (5‑5/16" x 2‑1/16" x 4‑1/8")
• Language interface: EN / FR / DE / ES / NL / IT
• Software updates: Over the air via Fusion-Link app or via USB (network required)
• MPN: MS-RA670

Why choose Fusion

Fusion develops maritime audio solutions with a focus on durability and ease of use. The front panel is designed for water resistance, and the products are tested for salt spray, temperature, vibration, and UV. Thanks to Fusion‑Link integration, you can control the system via compatible MFDs, apps, and watches for a consistent onboard experience.

Order now

Upgrade your boat's sound experience with the Apollo RA670. Order easily from Watersports4fun and complete your system with matching speakers and amplifiers. Have questions about zones, sources, or installation? Our specialists are happy to help you ensure your setup perfectly matches your vessel.

With this marine audio system, you can enjoy boat audio with multi-zone playback, marine radio via AM/FM or DAB+, and seamless integration with MFD navigation. Stream music wirelessly, connect a TV optically, and adjust DSP per room for clear sound on deck and in the cabin.