Pros: good clarity due to lesser bass
Cons: no frequency stands out as "good".
It was a historic IEM for me, although it does mark itself as the first "better" iem that I've ever purchased since the $25 Sony In-ears. I can't comment anything now, because it has been such a long time since I heard it.
Just from what I've remembered, an un-amped SE102 has little mid bass hump, is generally light in lows, and neutral vocals. That's for what I can remember clearly.