I think it may just be static electricity.
Jp, thanks. You were the one that got me interested in the HE-500 in the first place. I also agree that this is not just a good can because of the present price. It would be just as good at the older price as well. I listened to some hi rez music from HD Tracks, again using the Oppo (yes there is a theme here) and it was just outstanding. Dynamics and instrument separation were excellent.