To me, initial impressions are always a mixed bag...seems like I always really want to like a product when I purchase it, obviously the reason why I bought it. Typically I find things I like about the sound and things that I don't so I am always hesitant to post initial impressions as I like to give it a little time to work through the new toy syndrome that overshadows the impressions.
This time, I just can't help it...WOW. I own the Sensaphonics 2xs, UE10pro, UE5c, Westone ES3, Westone ES2 and I can honestly say that this is the first time I have put in a custom IEM for the first time and just said WOW that is an INCREDIBLE sound straight out of the box. Really, truly fantastic. Will the bass be too much for some, perhaps. I am not a bass head, I do like my bass, nice, tight, tuneful with a good presence and the UE11 hits it on the head. What is crazy is that it really doesn't give up anything in return. The highs are beautiful, the midrange sweet. Detailed with a bit of warmth that makes it more forgiving than the UE10pro.
More impressions to come.