Digital Signal Processing (DSP): A technically superior listening experience made simple, Fusion's DSP produces superior sound quality in every environment. Precisely calculated loudness curves optimized for the human ear ensure quality, full range audio at every volume level, while the feed-forward limiter anticipates a peak in the audio and adjusts the gain to make distortion, a thing of the past. Using environmental information and acoustically designed Fusion speaker profiles, you can now achieve customized, optimized audio for any area of your boat, resulting in an entertainment system that is perfectly tuned for premium audio reproduction, and programmed to protect your system season after season.

Setting up your DSP profiles is made simple with the free Fusion-Link app. With just a few clicks, you can set up the preconfigured DSP profile once and get back to enjoying what you love on the water, while listening to high quality audio customized for your ears and the environment. 

PartyBus*: Enjoy the freedom of musical choice with the Apollo Series and Fusion-PartyBus™. The power of PartyBus kicks in when you add more PartyBus enabled stereos to your entertainment system. Each additional PartyBus enabled stereo gives you the option to join Party Mode and play the same perfectly synced audio source through the entire vessel. Opt into Personal Mode and listen to available audio sources from your stereo in the area of your choice without disrupting Party Mode in the other areas of the vessel.

Over-The-Air Software Updates*: The Apollo Series is intelligently simple and always up to date, thanks to the over-the-air software updates available from your smartphone or compatible device via the free Fusion-Link app.

More Source Options: The Apollo RA670 features more source options, with Bluetooth, UPnP, Optical Audio, advanced SiriusXM features and DAB+ radio available, AM/FM radio, AUX and USB connections ready at your fingertips.

True-Marine™ Designed and Engineered: Built on Fusion’s True-Marine design philosophy, the Apollo RA670 has an impressive IPX7 and IPX6 rated water resistant front panel, and has been tested to a high level for protection against salt fog, temperature, vibration and UV. 

Fusion-Link™: The industry standard protocol for on-water audio integration and control, Fusion-Link enables control of your entertainment directly from partnered marine Multi-Function Displays, compatible Apple or Android devices via the Fusion-Link app, and Garmin watches via Fusion-Link Lite. With multiple control options, no matter what you are doing on your boat, you can always be in control of your audio entertainment. 

Multi-Zone Technology™: Three independent audio zones are available for a customized listening experience across your vessel, each with advanced localized menu controls including volume limits, zone naming, disabling zones and more. Note: Subwoofer and full range line outs require additional amplification.