Re: SansAmp Tri-A.C.???
I love mine...hardly play without it (mostly because my amp doesn't have a good mid-drive setting).
One of the things I've loved about it is that I can get the clean channel set on the amp and then kick any of the three switches to have "my" three tones. I've been able to take it from amp to amp, dial in the clean and only make very minor, if any, adjustments on the box.....that, or my ears aren't picky enough to know the difference!
I bought mine from a bro here on the board...don't recall who :\