I have a pair of these in my possession currently, I still cannot make my mind up on them. I use them with the Oppo HA-2 paired with my iPod Classic. 
  
As a commuting headphone they are superb, good resolution and also excellent isolation, but they lack a little speed (odd I know) and to me sound a little thick and warm. 
  
But to be fair I haven't spent enough time to thoroughly test them, I will try them with the iDAC + iCan see how that work with that system. 
  
I have to say they are very well built, comfort for me is good, but I don't have huge ears, and they look good. 
  
I passed them round the office today, and people were very impressed with how clear they sound. 
  
For a portable planar magnetic headphone, Oppo have done a superb job.