I have run a few shows with it (four to be exact) and my impressions / notes are the following:
-- The preamp is very, very clean. I can't really call it "weak" because of the jumper situation; if you want more gain, just switch the jumper to the high gain position.
-- What the hell does this mean anyway: a "weak" preamp? How is weakness a sonic quality? I really don't understand this terminology as it applies to a sonic characteristic.
-- I know that I will catch hell for this, but I don't think that the A/D in the unit is the greatest thing since sliced bread. That said, it is still better than anything out there in the taping realm. It has a sheen applied over everything, almost like an audible processing effect that you may hear on a Backstreet Boys album. It is not neutral, but sounds "digitalized" in a warm sort of way, if that makes any sense.
-- I still prefer this unit over anything else out there with my mics. I can't decide, however, whether the sound is ultra-clean or a bit hazy with the A/D.
-- I really do need to tape some more to get a better feel for this unit. So take the above comments with a grain of salt.