The MB Quart 310 is a passive subwoofer designed for audio performance, first introduced in 1987 and manufactured in Germany. It features a sturdy construction with dimensions of 390 x 475 x 366 mm and weighs 27 kg. The available finishes include a variety of wood options such as walnut, natural oak, white lacquer, black lacquer, and for an additional cost, rosewood, cherry, pine, mahogany, wenge, and raw oak. With a nominal power handling of 150 watts and a maximum of 180 watts, the subwoofer is adeptly built to deliver robust audio performance, supporting a frequency range from 25 Hz to 150 Hz. The Quart 310 has two speaker outputs and two inputs, facilitating connectivity. However, it does not include a remote control. Designed as a passive, closed cabinet subwoofer, it excels in delivering deep, resonant bass for enhancing sound systems.