Weatherproof, marine source unit with a multi-zone design and advanced features for outstanding audio performance. Can be mounted out of sight and controlled with Multi-fucntion display or wired remote. Built to exceed industry standards for salt-fog/UV exposure (ASTM B117/D4329) and vibration resistance, ensuring durability in harsh marine environments Weatherproof (IP66 rated) design and construction 8-channels of top-quality, preamp level outputs (3.5V RMS), with selectable Zone 4 or Subwoofer functionality Master Volume oversees four separate audio zones, each withindependent feature/control options: Level Control: Adjust volume levels together or individually, at any time. HP Xover: High-pass filter with selectable frequency (off/80/100/120 Hz) Rename Zone: Customize the names of each zone or select from a list. Volume Limit: Set a custom volume level limit for each zone. Built-in amplifier delivers 100 watts of high-fidelity sound (25W RMS x 4) to two main zones. Customize your sound using the built-in 5-band equalizer or onboard tone controls (Bass/Mid/Treble). Ultra-bright, 3-inch (76 mm) full-color LCD display with separate day/night lighting and display themes Intuitive interface with large text for easy legibility while in motion Large, single rotary control and backlit buttons for use in demanding environments Global, digital AM/FM tuner, plus built-in NOAA weather radio for the latest local weather updates (US only) SiriusXM-Ready (tuner, antenna, and subscription sold separately) Store up to 18 favorite tuner stations/channels, across all tuners/bands Wireless Bluetooth audio streaming from your compatible devices High-speed, USB 2.0 connection accesses music files on your USB storage device or compatible iPhone, plus 2.1A USB charging output Auxiliary input receives analog audio from an external audio source NMEA 2000 Certified - MFD (Multi-Function Display) control functionality using network cables and connectors (sold separately)