Pros: design, rich view, nice clear mids and highs
Cons: sometimes lacks a little bass
I've listened to them with Fiio E6.
Without burn-in, their sound IMO is extremely owerbrighten, but after 20-25 hours it's become more straight and normal.
I think this headphones sounds good for vocals, instrumentals and classical music, due to nice airy highs and mids.
On some rock songs they're lacking bass a little, but I'm not a bass head, so most of times it's OK for me.