I got the last one at futureshop thanks to your post. Anyways after using the mixamp with the PS4 and call of duty, it is far superior to a regular DAC through USB or optical. I can now pinpoint exactly where people are on the map and where bullets are flying from. At first I thought my ears were just not trained to locate the sounds. Not so at all. The mixamp almost perfectly simulates sound around you. I can't believe I haven't been using this thing the whole time.