TCL 40". By default, it's set to 'Disable HDR'. I can&39;t install unallowed apps, enabling dev mod. . For a Fire TV Stick or Cube, try turning off Dolby. Alternatively, use the inbuilt app and feed audio back to the receiver. Other products like HD Fury Arcana or others may also be able to do this. vulture. First off , you may not be able to use USB Audio, it's very software-specific. First, select your profile icon in the top-right corner of the Google TV home screen. . . The new X80K series comes with support.