Title says it all, I suppose!
Something that can run on between 9 and 18V.
I think it would be a pretty simple, handy project.
Just use this one, etch the board and populate it and your done!
http://www.tonepad.com/project.asp?id=72
Sabrotone has a H+K Redbox MkII vero layout.
And this:
http://runoffgroove.com/condor.html
If you dont want to etch, here is the board http://diy.thcustom.com/rog-condor-cabinet-simulation-diy-v1-0/ (http://diy.thcustom.com/rog-condor-cabinet-simulation-diy-v1-0/)
Ordered a second one of those, so I can record in stereo :) still have to box... and find dual-gang pots for it...