That's an impressive list of IEMs. So what makes the Duo so good for you? What does it do better than those you owned before?I've been avoiding saying anything on here about the Duo in an attempt to avoid being caught by the new toy syndrome.
However I have to agree with this poster, I have never heard anything quite like them, l have been searching for (for my tastes) a perfect iem that is suitable for all genres and all sources finally I have found them.
It has been a fun, but expensive journey and has seen me try the Sony IER-Z1R, CA Solaris and Andromeda, Ultimate Ears Live, Empire Ears Zeus, ESR, Nemesis and Odin, 64 Audio Trio, Nio, and U12T.
All have been great and enjoyable but nothing quite as euphoric and pleasurable to my ears as the Duo, of course for everyone else YMMV
EDIT: I guess my question is, can you please elaborate on 'euphoric and pleasurable'?