My Headphones

As supplied the Deus came with the XP WS4 backphones.  The WS4 Control Unit is removable so able to be used with several accessories. 

However, I found them uncomfortable and ill-fitting so instead I bought the compatible Quest HD Headphones which fit over-the-ear, and are designed to use the WS4 control module.
It’s simply a case of removing the module from the WS4 phones and clipping it into the slot on the Quest HD phones.
The audio is great, they fit well, and aren’t too warm to use on a hot, sunny day 🙂