This is a great DSP, it really made a difference on my Sennheiser HD570s. Certainly does make the music sound a heck of a lot more natural.
WTF? I tired this Plugin with a variety of songs but I cannot hear any difference with my Sony MDR-CD170, cannot even ABX it. I created a CRC checksum of some files to make sure the plugin is working right. Is anything wrong with my hearing?
Perhaps other people (or even the coder himself) could recommend a piece of music that sounds obviously different, to demonstrate to you how it works.
Download this clip and give it a listen. It's Self Immolation from Fear Factory's album Concrete. Listen to the guitar in the right channel and the cymbals in the left as you enable the plugin. They should appear to be pulled slightly forward.