Everything about this is better than the first version I built ... the distortion is better, it doesn't hiss, and I think the art came out better this time, too.




MP38A (hfe 61, L ~ 60) and some of Smallbear's colorful "Generic" Ge diodes with Fv around .27V.
I audited a lot of transistors in this one and my breadboard, and the Russians in the end had the creamiest sound when breaking up. A CV7112 (Hfe 58, L < 10uA) was a close second. It had more crunch and brightness and cleaned up a little better with the volume knob, but since I was shooting for "Voxy" and I always like using cheaper parts when they don't make a difference, I used the Russian.
I also discovered something really interesting: Apparently the first transistor can be literally anything now. That means ... NPN
OR PNP.

This doesn't really make sense to me, so if anyone has any thoughts for how and why it works, I'd love to hear them. Pretty much ANY gain range works, with just varying degrees of volume knob cleanup, brightness, and total distortion. Note, however, that an NPN silicon won't work *at all* if the reverse bias/temperature drift diode is in the circuit ... PNP will though

For anyone curious about this circuit, here's the schematic and layout:
http://www.madbeanpedals.com/forum/index.php?topic=5368.msg61990#msg61990I've added an etch image to the new layout in case anyone wants to build it, but it must be scaled (I don't know how to do that).
I've filmed a demo and will upload it overnight.