The integration of the Yamaha YAS-109 with Home Assistant can be done via a special Yamaha soundbar component available on GitHub. This component supports Yamaha soundbars based on Linkplay A118 and has been tested on the YAS-109. The standard Yamaha integration in Home Assistant may not work correctly for the YAS-109 as it is rather designed for Yamaha Network Receivers. To integrate the soundbar, the custom component must be installed and configured in `configuration.yaml`.