Hi All, I recently updated to a 4K Apple TV which only has a single HMDI output. I plugged that into my Sony 4K 8415 TV which then passes the audio to the AVR400. I've run all the room setup stuff (several times playing with this) and movies and tv sound fine. But when I play music through the AppleTV it always sounds flat with little treble. I think the culprit is that the Arcam is expecting movie audio and even though it gets digital stereo from the AppleTV (Via the TV), it's running it though the room setup processing which makes it sound rubbish. As the Apple TV only has the one output I'm trying to figure out the best way to wire all this up and what settings to use. Any advice?