Wow, these PK1's sound amazing. Before burning them in I used them a bit with my Zune and they sounded better than my PK3's, then I used them with my computer, and they sounded a bit static-y. I thought maybe I just had to burn them in more, but after a while I figured out what was wrong. While using my Grados I had messed with the EQ on the computer a bit, and apparently the PK1's didn't like those settings. I turned off the EQ and OMG these sound amazing, not static-y at all.
It sounds like full size cans are in my ears. They're not even fully burned in yet, maybe 12 hours of burning in time so far, but already I'd say they're *gasp* better than my SR60's. edit: and this it them UNamped, I can't wait till I get an amp. XD
Yuin FTW! <3