I have the v1.0 dragonfly and the v1.2 dragonfly on Windows 7 with wasapi audio driver outputting at 24bit 96Khz.
I have compared the two and the following can be said:
* v1.0 has more bottom end and is fuller and more punchier
* v1.0 is warmer and more analog sounding
* v1.2 has up top clarity and detail with more zing
* v1.2 has less punch on the bottom end and is more digital sounding
Which you prefer is up to personal taste but I hope this helps others.
I personally enjoy both of them :)
I have the v1.0 and v1.2 too and I agree with your impressions. When I compared them I heard a slight difference but wasn't sure how to describe it, your impressions really hit the nail on its head.
I bought the v1.2 hoping for a direct improvement to the sound signature of the v1.0 which I love but, oh well.
Edited by lalala6 - 8/23/14 at 10:45pm