The MB Quart B-One is a versatile multimedia source unit designed for off-road and marine applications. It features a 160 Watt internal amplifier and connectivity options including Bluetooth, USB, and Aux inputs, making it easy to connect to various devices. The unit offers universal vehicle fitment with marine-grade protection, boasting an IP67 rating that ensures waterproof, dustproof, and shockproof functionality. This makes it suitable for usage in rugged outdoor environments. With a Bluetooth range of 32 feet, users can enjoy a reliable wireless connection. It supports Apple Control for quick access to music on iOS devices. The interface includes a master knob and nine control buttons for easy operation. Audio specifications include an RMS output of 4 x 20 watts and peak output of 4 x 40 watts, with a pre-amp output for a subwoofer, enhancing the overall audio experience. The B-One is compact, lightweight, with dimensions of approximately 5.95 inches in width and a mounting depth of 3.14 inches, making it easy to install in various settings.