Not trying to tell my granny how to suck eggs (what is the origin of this strange expression?) but do make sure the Utopias Matt loans you are run-in. The pair he loaned me weren't at all run-in but 7 days of 24 hour music improved them hugely. I'll PM you the S/N of the ones I'm loaning, least you'll know they're run-in...........I'm sure HiFiMan had a great plan but why would a headphone manufacturer produce a headphone that requires a hugely expensive amp/dac to go with them? Focal got this absolutely right in my view.