Sony SASW3 200W Wireless Subwoofer for HT-A9/A7000 Add bass to your home entertainment experience with the Sony SASW3 200W Wireless Subwoofer. It is designed for the Sony HT-A9 home theater system or HT-A7000 soundbar. This compact SA-SW3 wireless subwoofer immerses you even deeper into movies and music. Enjoy louder, clearer bass for a more cinematic surround sound experience. | Sony | | SASW3 200W Wireless Subwoofer with Knox Gear Subwoofer Isolation Feet | Silver | Best Buy