Bingo! I just wrapped up a plug-in session w/ mine thru my overdub setup with Hd Ph. so I could get a feel for the bass.
I'm afraid to start talkin' about it - I may never stop.

Don't mind me - this is just for the record.
Re setup: I requested that my action be set with open strings (like I've always done it myself) to keep it same ol'.
After measuring it yesterday I found it to be about 1/64" higher all round than what I asked for. (I suspect maybe he set it at spec but w/ strings fretted at the 1st - as per reg.) I found the flats a tad "tight" tonite as a result but by the time I finished the 2-1/2 hr session I couldn't be paid enough to lower the setup. MAN!!! I have been playing P/flats for a LONG time & thought I knew sompin 'bout it.
Well guess what. I ain't NEVER heard flats 'til tonite.
I messed a bit w/ pup mix & preamp/ VTC blending but played all nite w/ only the P pup so I could do some equating w/ my Fender P.
I really like a bit of a bass boost - just to hear it "come on" when hammering a note on the open A string while adjusting w/ right hand. Then the same w/ the treble boost. Rolling off the VTC in variation(w/ that preamp set left constant) provided anything I wanted. Have you ever heard a grown man weep?
1. The preamp signal is a lot hotter (even flat) than running a passive P thru a Sad' o/b pre. This provided more note definition & edge typical of what I have grown to recognize as the "Sadowsky tone". (not evident to me w/ the Fender & o/b pre) Mind you - the passive mode was equally impressive but not as hot, naturally.
2. This one is very interesting to me: Some good amps, especially separate power amps, are very "fast". That is- the transient response is perceived as "being ahead of the note" so to speak. My Avalon U5 is like that also. Well - the Sadowsky preamp is RIGHT THERE! Blew me away!
This facilitates greater freedom in constructing passages & improv becomes effortless. It does away with any "hanging" bloom & gives phrases a clarity that I have not heard before.
3. That VTC is WORTH the price of admission! There is no part of it that doesn't provide an exceptional useable tone palette. I was on that thing ALL nite. That's where the money is!
Just to wrap for now - That Sad' P pup IS in my pocket.

Another tidbit for those unaware - Using the strap lock at the top horn DOES indeed diminish the tendency for the headstock to drop due to extending the lift point towards the headstock. Nice!
B.