No, this is the integrated acoustic surface system from Sony. It works awesome with DTS. My theory regarding why the issue happens is the same as described here What does enabling passthrough-> optical do, when you are using integrated audio system? - #2 by phoneguyinpgh
when using hdmi passthrough, or disabling passthrough, the audio gets super low, and it is nearly impossible to hear center audio. When I turn on optical passthrough it works great, but then I can not use dolby vision, as described here Bug: no dolby vision when using passthrough optical
It is super easy to test, because I can compare the sound to the built in sony player with dlna in plex. When using passthrough optical in plex it is exactly the same volume levels as in the built in player, but when not using it, it sounds terrible. In one movie the speech was barely audible, so I use that as a case scenario, although it happens on all movies.
Again, I got to stress that I do not want to use passthrough, but it is the only workaround I have found.
