A:
You may use these by attaching the Xbox One Stereo Headset Adapter. They work rather well actually, this is what I used until upgrading to the Elite 800X. Only problem is the wired hook ups. You do need to note though that for audio from game play you must have an output from the TV. Make sure you have the proper jacks before purchase!
Side note, XO One are on sale for less and meant for Xbox One play at the time of this post. May be a better choice!