I purchased the GSX 1000 this week and I must say I'm very underwhelmed by it so far.
I use Audio Technica AD700 headphones and find the GSX's 7.1 mode to not be an improvement over stereo 2.0 via my motherboard for positional audio.
My headphones are generally considered one of the best for positional audio in games due to the large sound stage so perhaps worse headphones may benefit from it but personally I can't see any reason to use a GSX in my case, if anything it makes it a bit harder to tell the distance from an enemy.
I was testing in counter strike global offense on an audio testing map (you can turn on various noises like footsteps in a static location and freely walk around to test positional audio). I have the gsx set up in windows to use 7.1 and also enabled 5.1 in the cs settings.
I'll test it some more tomorrow with other newer games and update my post with my thoughts, perhaps cs only allowing you to use 5.1 isn't a fair test. I'll install Overwatch, I believe that allows 7.1. If anyone has any other suggestions please feel free to tell me to try something out!
Oh one thing I have to say is what the hell is up with that gaming mode on the GSX, it sounds so awful I had to laugh.
![Big Grin :D :D](/styles/default/xenforo/vbSmilies/Normal/biggrin.gif)
I think it sounds by far the best on the regular sound mode with none of the other extra options enabled personally.