Bro PCWORK im stoked to say that after a coupla days of 24/7 cooking, the high-end tizzzzz exhibited initially is gone or substantially toned down at the very least. either that or its a bad case of psychoacoustics
on another great note (pardon the pun

its crystal clear to me that the Koss cable pawns the ori Yuin cable. as of now & subject to my superhuman powers of TotalRecall (again...pardon the pun

), the Koss-cabled PK1s are not only cleaner with greater clarity & detail, imaging has improve with a lazer-like precision instead of the blob it was. all in all- 2thumbs up for bro PCWORK
bro Akabane, if bro PCWORK is amenable to recabling your PK3, i highly recommend u to run (dont walk la) to shove it him. if not, perhaps a note declaring your everlasting love mite move bro PCWORK to action - otherwise beg, cajole or threaten! u wont regret it...regardless of the ori Yuin cable (or other unspecified parts

) stiffening or not. the Koss is a better cable

.
as for my ancient Sonys (MDR E805 for the curious need2knows) with the bigger drivers, it still isnt a match for my PK1s. while both has similiar bass quantity, a
well driven PK1 triumphs over the Sonys in bass quality, is fuller & smoother across the range with better imaging & perhaps superior micro-info retrieval. the preceding statements is only true with the
CAVEAT being a well-driven PK1 (while the Sonys have no such requirement although there were improvements when amped). all in all & honest be told, i wouldnt be too disappointed if i only had the Sonys to accompany me at beddie-bye time.
me thinks similiar to PCWORKs 10yrs old MX500, my old Sonys sound grand not so much cos of burn-in but more bcos these items (& alot of other things for that matter) are simply better made - both in materials & workmanship. for 1, im quite positive that both these old Sonys & MX500s arent of the made-in-china variety. nothing personal against China made products but its not exactly TopSecret that alot of those products leaves alot to be desired. just my 2cents ofcos. thxs again bro PCWORK for the greatjob