The headphones you have don't have any actual surround sound capabilities. The only thing they do is have a software driver that maps a set of channels from 7.1 surround sound to the binaural sound mapping of the headphones.

The pipewire sound server can do the same thing as iCue with filter chains and specific plugins. See this post for some pointers and guidance if you wish to set it up for yourself.

Do note that unless you have content built with actual 5.1 or 7.1 surround sound, there won't be much actual benefit to using virtual surround sound on headphones in the first place.

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