If I were you, I'd do the Ruby Amp (
here and
here) and something like the Galileo MKII (
here) or the Vox in a Box (
here) and put them in the same enclosure to feed a tiny speaker.
Anyway, check out the main site sections "Amp", "Pre-Amp" and "Amp Emulation". Plenty of vox-like layouts to choose from.
Hope this helps!
Cheers