Everybody knows the weakest part of a good headphone is (generally) the imaging.
You may get more detail and less distortion from a headphone than a 10x priced speaker but you can't get the imaging.
For some time I was looking for a VST DSP plugin to get a better imaging with my cans.
Here is what I found:
TB Isone
Love it! You do get good imaging.
I thought I'd share this with the audioholics gang.
It works with any player that supports VST plugins (e.g. WinAmp); sadly iTunes does not support VST plugins.