Question about EPOS Game Zero

Jup.

- Sennheiser G4ME ZERO has been available since around the end of 2014.
I therefore recommend that you first watch a review video: https://goo.gl/nU321w

You might also need this adapter: Sennheiser PCV 05
It is not described at all on the Sennheiser website.

However, the newer Sennheiser gaming models such as GSP 500 & 600 say something about Xbox One.
FYI: Sennheiser GSP 500 & 600 have only been available since the beginning of 2018.