If anyone has added headset compatibility to a Fighting Commander 4 or other 3rd party ps4 controller, please explain where you got the port from, and how you did it. Thank you in advance. 
Not possible. Only the Sony Dual Shock 4 can support headsets.
Unless you pad hack a Sony Dual Shock 4 and put it into your stick it is not happening.
Ok, thanks for the info!
Just get a headset with a USB audio card, Iād recommend the Kingston HyperX Cloud II, not too expensive.