PC - Stereo Headset Adaptor Issue

That is absolutely correct Xbox and PC have different peripheral.

I just tested this myself with the Stereo Headset adaptor on my PC, I had assumed that the game/chat audio mix wouldn't work on the PC, and that's how it seems to be. The volume control works, but changing the levels of game or party chat don't. I assume
that's because it's designed for the Xbox One first and foremost.

just use the gamebar audio mixer to turn game volume down, thats how it is done on pc.

Yes the stereo headset adaptor wire will work. It also states in the description you need the stereo headset adaptor by Microsoft the one for 17.85 as well. The wire and adaptor are both required to get your headset working. The cable you listed In your
reply back to me and the 17. 85 xbox stereo headset adaptor are both required. The wire plugs in to the adaptor and the adaptor plugs in the Xbox controller. I have the elite controller with the headphone jack as well and it dosent work right in my testing.
I know it sucks that you have to spend more money then you wanted too but unfortunately the only other way is to buy a new headset made for Xbox one. So buy the wire you stated in your reply post to me and the stereo headset adaptor for 17. 85 and your headset
will work. Your x12s will have some issues with xbox one because they are not designed for the xbox one.

You can buy a stereo headset adaptor check if your sons headsets are compatible