I guess I want all channels, but I don't think there is a setting for that. There is a setting for 7.1 input, but it can only be used for that, 7.1 input from a component source. The All Zone Stereo I think was intended for the user to play the same stereo sound through all zones, like up and down stairs, or obviously any other room I guess. When I power on, the default is stereo FR FL and Center plus Sub 1 . I am using ARC from the tv with the proper 4k cables also. I am going to try a movie now to check 7.1 channel sount.