Summary: I am writing this quick review after about 20 minutes of use so I hope I am not jumping the gun, but after trying 5 other head phones (sennheiser momentum and amperior, Vmoda M100, the new PSB and the bowers & wilkins P5) I could not find quite what I was looking for. Each had something I did not like about them. Today these Sony's arrived and I was instantly in love. I thought I was going to settle on the Vmoda's but in my opinion these blow them away.
Summary: A very good headphone , fills a niche in my collection being quite Bass heavy as opposed to my other day-to-day headphone the Senn HD595.
It is a very comfortable can , with very good quality faux leather for the ear cups , but it can get sweaty at times.
The sound quality when amped is superb and is only marginally different when used via Bluetooth, so close in-fact that if it weren't for the stuttering when changing tracks on my iPhone 5 I wouldn't notice.
Pros: Good Passive Insulation + Comfort , Good sound quality amped +un-amped , Very stylish and solid
Cons: Not a metal headband as appears, Bluetooth causes some initial delay on every song played , Mic not sensitive enough for Siri / Android commands