So. My E17 was just delivered today (even though tracking says it was yesterday 3:22 p.m.), I guess I just "love" usps... what a terrible company.
Anyway, thanks to them for at least delivering this magnificent thing.
I own a pair of Sennheiser HD600s, here is shortly what i think of this amp/dac:
I will be using this with my laptop, as I am now, so E17 gave HD600s more detail and increased sound stage, if you choose to EQ bass and treble, (I found that setting them to 10 and 4 respectively suits my taste) you will be satisfied.
I think main con of HD600s is that they have 0 bass. E17 definitely helps them improve on this front, the cans even start jumping a bit, which is nice! BUT I must say the bass is never overwhelming, since these are HD600s, more like it adds to general sound signature. I still think HD600s would fit classic music, maybe jazz, but elsewise if you're looking for a pair of cans, don't go this way.
P.S. The T-shirt that came with it is also lovely
All described ^ is IMO
Forgot to add: the device which has been delivered from Miccastore is from 1st batch (i remember Feao say something about the fact that 2nd batch is supposed to carry name "Alpen" and this one hasn't anywhere)