Thanks for your impressions. Mine now have 100h of burn in on them but i couldnt make out any differences in sound. I love the bass of these, i was listening to 'Stardust - Music Sounds Better With You' and it gave a nice ear massage while the mids keep that lovely clarity. Before i post detailed impressions i really need an amp for them. Have been using them out of my old Sony DAP and my cellphone.