FUSION MS-WB675, white Apollo series box - 4 zones
The Apollo WB675 is the embodiment of award-winning audio innovation in a discrete form factor.
Sources: AM / FM / Bluetooth / Apple AirPlay 2 * / Optical Audio In / USB / AUX / MTP / UPnP * / DAB+ Ready (requires MS-DAB100A) / SiriusXM Ready (requires SiriusXM Connect Vehicle Tuner)
Key features of the new Apollo WB675 include Fusion's digital signal processing technology, advanced PartyBus™ networking capabilities*, Wi-Fi audio streaming with Apple AirPlay® 2*, over-the-air software updates*, and more source options including optical audio for connecting to TVs.
The Apollo WB675 also features advanced connectivity options that offer convenience and flexibility when controlling your entertainment system.
You can connect an Apollo ERX400 wired remote control via Ethernet for the full Apollo user experience, or for a more streamlined system, you can control the WB675 using just a Garmin MFD via NMEA 2000® or Ethernet. From the kick drum to your eardrum, Apollo has made it inherently simple to customize your audio entertainment for superior sound quality anywhere on your boat. The future of marine audio entertainment has arrived.
* Available when the Apollo WB675 is connected via an Ethernet cable to a wireless network router or Wi-Fi®-enabled Apollo series stereo network.
Characteristics:
Digital Signal Processing (DSP): A technically superior listening experience made simple, Fusion's DSP produces superior sound quality in any environment. Precisely calculated volume curves optimized for the human ear ensure quality, full-range audio at any volume level, while the feed-forward limiter anticipates audio peaks and adjusts gain to make distortion a thing of the past. Using environmental information and acoustically engineered Fusion speaker profiles, you can now achieve customized, optimized audio for any area of your boat, resulting in an entertainment system perfectly tuned for premium audio reproduction and programmed to protect your system season after season.
Setting up DSP profiles is easy with the free Fusion-Link app. With just a few clicks, you can set up a preconfigured DSP profile once and get back to enjoying what you love on the water, listening to high-quality audio customized to your ears and the environment.
PartyBus™ Network*: Enjoy the freedom of musical choice with the Apollo Series and Fusion's PartyBus™ Network. We've introduced a new, intuitive user experience that allows for easy navigation of your boat's entire audio network, making audio and source control a seamless experience.

Key features include:
Stereo Grouping allows you to connect multiple Apollo series stereos to the same network and play the same synchronized audio source on all stereos. You can create multiple groups for a personalized audio entertainment experience. Note: Apollo SRX400 sources are not shared across the network.
Volume Control , Scroll through the available zones on your boat and enjoy independent volume control to customize your listening experience, or select ALL volume to adjust a group of stereos at once.
Power Options , allows you to power on any Apollo Series stereo connected to the PartyBus network remotely from another Apollo Series stereo.
Home Zone is the physical area on your boat where the stereo is installed. After adjusting the audio in another zone, the stereo will default to Home Zone audio control after a period of inactivity.
Note: User experience may change without notice when a new version of the software is released.
Wi-Fi Audio Streaming with Apple AirPlay 2* : Seamlessly stream high-quality audio via Apple AirPlay 2 over Wi-Fi* from your compatible Apple device to the Apollo WB670. Apple AirPlay 2 has the added functionality of being able to stream one audio source from your compatible Apple device to multiple Apollo Series marine stereos connected to the same network, with individual and global volume control of the head units.
Over-the-Air Software Updates* : The Apollo series is intelligently simple and always up-to-date, thanks to over-the-air software updates available from your smartphone or compatible device via the free Fusion-Link app.
More Source Options: The Apollo WB675 offers more source options, with Bluetooth, UPnP, optical audio, advanced SiriusXM and available DAB+ radio, AM/FM radio, AUX and USB connections ready at your fingertips.
Compact Design: Designed to save helm space, the Apollo WB675 can be mounted in out-of-the-way locations such as lockers, interior helm consoles and other hidden compartments.
True-Marine™ Designed and Engineered: Built on Fusion’s True-Marine design philosophy, the Apollo WB675 has been tested to a high level for salt spray, temperature, vibration and UV protection.
Fusion-Link™ : The industry-standard protocol for on-water audio integration and control, Fusion-Link enables control of your entertainment directly from partner marine multifunction 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're doing on your boat, you're always in control of your audio entertainment.
Multi-Zone Technology™: Three independent audio zones are available for a personalized listening experience on board, each with advanced localized menu controls that include volume limits, zone naming, mute zones, and more. Note: The subwoofer and full-range line outputs require additional amplification.