I used to have an x12 and If you're playing with a play and charge kit attached it's 1000% the cable you have attached to the controller, it's a known issue that causes a horrible feedback noise with a turtle beach headset anytime you talk with it attached. Just unplug when you need to use your headset and it should be good to go.
Major props, I have the x41's, you probably just saved me $200
Hopped in a game with uh oh two
Disconnect the charger from the controller
Join the Xbox live chat
Immediately hear "wtf is that god awful noise" switch my mic off.
Honestly, I only have problems with these wireless headsets, I hear everything fine, but talking on a mic is crap
So either I'm going to get the $20 pair of stock out the box headphones, or a WIRED pair of turtle beaches...which have NEVER gave me a problem before
But wires.....fukking wires fml