Thank you so much for this TIP.... worked perfectly.
I have set up:
Xbox -> HDMI -> Denon AMP digital audio -> HDTV Digital Video (HDMI Switching)
Xbox -> A/V Plug -> TB X41 -> Headset
So i originally hacked the "out of the box" A/V cable /Plug, so I can have 5.1 audio going to my Theatre via HDMI, and have analog "red/white" going to my turtle beaches for 7.1 DP logic /Mic. Every time I would switch inputs on my receiver (HDMI switching) it would turn off my Xbox, but that was a problem cause I use my Xbox for my Telus optik TV, and everytime the Xbox restarts it has to load the Optik info which could take 3 min. now with the additional hack provided removing the loop cable (Jumper), I get to keep my xbox on fulltime...