[GloriousLettuce]

For those that didn't manage to set this up yet, here's the audio difference sample in my attempts, although it sounds better in my setup then the file conversions I did:
 
https://soundcloud.com/blythe-cass-bryston/dolby-sound-processing-foobar-test-3d-soundstage-simulation 
 
Edit: Nope, removed. Will find another way to upload it.

 

[Graphicism]

  I just learned that if you turn the headphone amplification to 200%. It gives you double the impact!

 
Anything above 100% causes clipping.

 

[Knowname]

finally got this working, I have version 1.4 seems you can skip the channel mixer part, yours is built in it's either called 'convert to 4 channel' (which I use on certain poorly recorded songs) or 'upmix to 5.1'. put that above dolby headphones and it sounds tite! Don't forget to click the dynamic compression box. This thing rox my socks, yet another reason to put up with foobar's clunky interface :/.