Hello, Yes, the Sony SA-SW5 subwoofer is compatible with the Sony HT-A3000. You can connect it wirelessly to the soundbar. You can find more information on our support page. Sony Europe

The Sony SA-SW5 subwoofer is compatible with the Sony HT-A8000 Bravia Theatre Bar 8. This compatibility allows you to enhance your audio experience with deep, rich bass by adding the SA-SW5 to your soundbar setup.

Thank you for letting us know. We have informed the responsible office and hope that the cashback campaign will be deposited in a timely manner.

Hi Nick.2003, unfortunately, that's impossible. Sony Support EN