Whether you're playing games, music or movies, the Klipsch SWS Subwoofer System brings you to a new dimension. Add one 100-watt, 8-inch sub to your multimedia system and hear the solid bass foundation you've been missing. Stack 2, 4 or even 16 and shake that foundation. The unique "Bass Boss" controls the volume for a single sub or an entire array. And the SWS's front-firing design makes placement easy. This powerful subwoofer is available in only a 120 volt version.