I just wanted to pop in to thank this thread sincerely. I find a lot of audiophile stuff to be a bunch of hogwash, but I do have a pair of HD 800s and an Essence STX that I've used for years now. I just discovered this thread tonight and I have to say there is an absolute night and day difference in the sound I am getting with these cans after setting up foobar properly and using the unified drivers. The soundstage, which always floored me, is somehow even more amazing and the bass is just so tight and defined. Really a genuine enhancement to my listening experience. Thanks again for taking the time to gather this information up!
Could you post the URL to the particular posts relating to "setting up foobar correctly" please?