I've been using Evshrugs Mix-AMp 5.8 for a day now and I like it. The surround processing is batter than that of my NAD, and is quite three dimensional. I was playing Ground Zeros and head enemies driving up behind me in a jeep... behind me.. I was taken aback by that. It does have this binaural presentation to it.
Though I had to purchase an adapter to use my mic with it as the mic input on the Astro is for a 2.5mm headset. Though my 360's headset now works on my PS4..
I might keep it..... *runs away screaming SNAAAAKE!!!*