I bought a pair of XO 7s and I was told that I could mix the game and chat volume with the new Xbox One adapter. This is not working for me. I press the game button and try to turn it up, it works fine, but then I press the chat button to turn people up, it turns the game volume up with it. Its like the two buttons are doing the same thing. If I press either button, the game and chat volume will go up and down together. I turn the game volume all the way down and I cant hear anyone speak. I turn the chat all the way down and I cant hear the game. Is there something wrong with my adapter? If anyone is having problems with this I found a work around. Turn your headsets up so you can hear people talk and then go into the settings of your game and turn the master volume down so the game is not to loud.
I just bought a pair of the XO7s today and found this thread looking for how to work the volume interface. I assumed that you would press game button then use +/- to change level, then press chat volume and do the same for chat level. After playing around a bit longer I worked out that the game/chat buttons are not select/toggle buttons, but are the BALANCE. So its simply:
+/- buttons = Volume
game/chat buttons = Balance (i.e. the balance between game and chat level for the given volume)
This may not be your problem, but mine work fine once I worked out what the buttons were actually doing.