Klipsch R-8SWi home theater surround powered active subwoofer. The sub is in good shape and it sounds great, a lot of bass, 50W with a 8" woofer at the bottom, it says 50 watts but it sounds louder, Klipsch sound quality similar to JBL and Polk Audio! I will have it hooked up to the garage stereo so you can hear it before buying! The price is $80 firm, not negotiable!