I received my E7 yesterday and I can honestly say, listening to the same music with M50s through the E7 is a new journey of discovery!
The DAC+amp is magical, it reveals subtle nuances and details in music that I previously never noticed (I even did analytical listening with some of my music beforehand).
Also, the dynamics have been improved so much now, there is a "naturalness" and "fluidity" in the music out of the M50s that did not exist before the E7s.
Also it adds so much more clarity and instrument/sound separation to all the music relative to before, so even though soundstage of M50s sound untouched, it now sounds like a very CLEAN small stage, instead of a CRAMPED one without the E7 (pardon my horrible attempt at an analogy).
It honestly feels like the feeling when I just got the M50s, listening through my whole music library and just hearing new things popping out of the same music I've heard a thousand times.
Edited by jerg - 8/28/11 at 11:51pm