I recently bought a Corsair HS55 Wireless Headset. They stated it supports Dolby 7.1, IF you use the iCue software, which doesn’t work on Linux.
Using pavucontrol, I can change the profile between Analog Stereo Output, Digital Stereo (IEC958) Output and Digital Surround 5.1 (IEC958/AC3) Output, but the Analog one is the only one that works. The other 2 just results in broken audio. There’s not even a 7.1 option.
I don’t have high hope about this, and I expected it to not work when I bought it, but it would be nice if anyone has some ideas.
Dolby audio is proprietary and is parented. You can not use it on a open system.
For surround you may need to play with the settings a bit. You also could try Pipewire but I am doubtful it will make a difference