Knox Gear Subwoofer Isolation Feet (4-pack, Black/Gold)The Knox Gear Subwoofer Isolation Feet are designed for use with home stereo subwoofers. This pack of 4 feet helps reduce unwanted vibrations when playing music, for an optimal listening experience. Cleaner Sound With Knox Gear Subwoofer Isolation Feet, you get cleaner sound. Attaching these feet to your subwoofer suppresses sound vibration and low end distortion, improving your sound quality. Beautiful Design These black and shiny gold isolation feet