Received my **** PT15's today.
However, I only put in a coupled of songs worth of time into it as I was enjoying my Rose Hybird 8 which I bought together with the PT15's.
Initial impressions:
I would call this the little brother of the Mojito (or its baby), like the Dual Drivers, the only department lacking is the bass. Doublebass still sounds quite "meaty" or "bodied" with the PT15.
It must be noted that the bass of the PT15 is leagues better than those of the Dual Drivers, sounstage of the PT15's is very spacious and quite deep.
Highs are also better than the Dual Drivers in that they are more refined with no noticeable graininess. However, they are not as well extended as the Mojito's highs (that is to be expected).
Detail retrieval is good, but I cannot confirm yet as I only had a brief listening session.
Overall, the detail and treble head within me is surprisingly satisfied. Airy and clear is the PT15's early impression.