The Cyber Acoustics Subwoofer, model Cyber Acoustics Little Sub, is a wired unit designed specifically for use with Cyber Acoustics speakers. With a sleek gray color and a unit quantity of 1, this subwoofer enhances the audio quality of your computer speakers for a more immersive listening experience. Tested and confirmed to be in working condition, this subwoofer is a reliable addition to your computer setup. Plus, with free shipping included, it's a convenient and affordable option for improving your audio output.