I just checked out the Hamptone site for the first time in a while. Besides the cute pics of dogs sleeping off the NO Tape Op conference hangover, they've got a kit for a two gain stage Jfet booster/overdrive pedal, with wall wart power for $99. Beautiful! All you need is ouput iron, xlr output jack, and a bigger case than the supplied Hammond pedal box to get up to a studio worthy DIY, and hell, I've got most of that stuff on hand already. I believe they even have regulation on the board for the wall-wart, and an experimenter section for tweaking out the design. Hell, even to work it as a mic pre, too, it isn't much more to add. And I have things I can stuff into the leftover Hammond box.
Bear