Soldato
That's intriguing. Another member here also has the PC360's and HD555's. He bought the 360's to replace his ageing 555's, but he was very disappointed with them. He said the 360's just didn't sound as good, considering they are 2x the price.
PC360's manage to run my HD595's close, however X-Fi HD has an onboard amp; so perhaps PC360's require slight boost to fully work as intended? Happen to still own my former Creative X-Fi Xtreme Music soundcard; so I'll pop it back in later and see if any huge performance gap opens up between these headphones.

