Developer's DescriptionBy Yamaha CorporationThe Sound Bar Controller app provides easy operation for select Yamaha Sound Bars using your Android device.The Sound Bar Controller app provides easy operation for select Yamaha Sound Bars using your Android device.Key Features:- Initial setup of built-in Alexa voice control settings- Basic control functions such as volume up/down and input selection- Play audio files stored on your phone or NAS drive through Wi-Fi[Supported Models]YAS-109, YAS-209ATS-1090, ATS-2090[AndroidOS Version Requirement]* This application supports AndroidOS 5or above.- A wireless Local Area Network (LAN) and a compatible Yamaha Network product(s)* residing within the same LAN.