What size is the male part?(don't know what its called)2.5mm,3.5mm something else What size is the input for the ps4/x1? Sorry I don't really have an answer but I am also curious.
x1 is propriatary.... not sure about the ps4.
Did a little research, I believe the ps4 is 3.5mm from what I read on the faq. The x1 is proprietary like you mentioned looks like a larger micro usb. http://cdn1.sbnation.com/entry_photo_images/8240545/xbox-one-controller-theverge-2_1020_verge_super_wide.jpg
So tc you'll have to get an adapter to use that headset on the x1.