First of all, I have no idea about headsets.
I would like to get a headset for the Xbox and have looked everywhere now. Almost everywhere I see an adapter on the product pictures on the bottom of the jack plug? Hangs. Is it absolutely necessary?
I didn't understand your question exactly, but the fact is that you can only put a 3.5mm plug in the controller. On the PC there's one for the microphone and one for the headphones. If you have a headset with 2 plugs (1x microphone, 1x headphones), you need a splitter. If you only have a 3.5mm jack plug then not.
Did I understand correctly that xbox controllers have a 3.5mm connection as standard, because for me it looks like it is less than 3.5mm.
If you are looking for headsets on Amazon, for example, you will only find 2 different cables. Once with usb and once with a jack. If you want the headset for the Xbox then you need jack
