Here’s a vero layout of the Carl Martin Plexitone based on madbean’s schematic incorporating the suggested mods to tame it somewhat. I haven’t tried this one myself. Let me know if you do before I get around to it.
Update (05.09.2011): Fixed a couple of minor errors (electrolytic was mislabeled as nF and the cut count is now correct). Still haven’t verified the layout.
Update (25.09.2011): Built this circuit tonight. This one is now verified working 🙂