The Andover Spinsub 

is a  Subwoofer with dual 6.5-inch Woofers in a vented enclosure and driven by a 100W (Peak) Class D Amplifier. The SpinSub easily connects to SpinBase via its subwoofer output. SpinSub is designed around Andover’s patent pending IsoGroove technology, which reduces unnecessary vibrations to eliminate acoustic feedback. This enables SpinSub to be placed near a turntable, or even directly on a SpinStand, without issue. SpinSub is wrapped with premium, heathered black or white fabric that perfectly complements SpinBase and the SpinStand record stand – where it's designed to perfectly fit. The subtle elegance of the Spin product system looks great in any room, with sound to match.