I realize that this may not have to do with the Amp specifically, but you all are such a helpful community of audiophiles that I figured you'd probably know.
I was trying to watch a Blu-ray whose audio output format is DTS-HD Master Audio. I have updated my Playstation Station 3 to a version that apparently can handle that audio format. Then I have told it to convert to DTS 5.1. It's set to output in Bitstream. When watching the video, the playstation's video info does indeed show the output as DTS. It used to say DTS-HD MA before I told the PS3 to down convert (?) to DTS 5.1.
The PS3 is connected to a Vizio P-Series 55" LED TV (2018) via HDMI. And the Vizio is feeding my Sonos Amp via HDMI ARC.
The Vizio is set to output digital audio as bitstream also. And according to this article: https://www.rtings.com/tv/tests/inputs/5-1-surround-audio-passthrough this TV is capable of passing through DTS audio over HDMI ARC.
However, there is no sound on the Amp and the TV is's info doesn't show any detected audio either where sometimes it shows Dolby or Stereo when I press info.