[Pre Order - allow extra time] Sony SA-SW5 7.1" 300W Wireless Subwoofer for HT-A9/3000/5000/7000 For HT-A9 Home Theater System, For HT-A3000/5000/7000 Soundbars, 7.1" Woofer, 300W of Power, Digital Amplification, Separated Notch Edge Technology