Preliminary thoughts. Got it yesterday so only have about four hours on it.
3D effect in three positions: Direct (none), minimum sounds duller and less separated, maximum is O.K., not sure it's really wider than my WA6, seems to be brighter. In all, i would say it sounds like there is some FR manipulation going on. Maximum doesn't work too well with my Grado's which are already bright enough given that they are G-Cushed which may brighten them up more and widens the soundstage a lot. So, right now, kind of a meh.
X-Bass: Direct (none), minimum increase is a little like a loudness control (for the ancient ones) and not bad. Doesn't seem to make things too boomy so the increase must be lower than mid-bass, maximum could be useful, again mostly increases the low bass, probably too much most of the time for me. Maybe I don't need those orthos after all.
The volume control is waay sensitive so 10 o'clock is really too loud on the Grado's and even the 600 ohm 880's. Seems to have enough juice however.
It seems nicely made, solid and matched the Woo's silver look fairly nicely. When plugging and unplugging even with the supplied stick-on feet, you must hold the unit when plugging and unplugging. Other accessories include a stereo pair of RCA's and a single mini to mini stereo cable for the digital devices. They don't recommend plugging both in at the same time.
Perhaps when I have some more time with it, I'll post further impressions if they differ from these. Looks like a keeper for $266 including shipping.
Maybe some pics would be nice but the writing is super tiny on it.