Velodyne Acoustics ULD-12 is a subwoofer system designed to deliver deep and accurate bass reproduction for home audio systems. It features a patented High Gain Servo (HGS) system that minimizes nonlinear distortion, resulting in clear and precise bass. The ULD-12 is equipped with both line-level and speaker-level inputs, allowing for flexible integration into various audio setups. Whether you're enjoying music, movies, or gaming, the ULD-12 will enhance your listening experience with its powerful and immersive bass performance.