So, I finished this one today. It isn't my prettiest lead dress, but it's not bad.
This is a refinement of an amp I built for myself a few years ago. Based on a Vibro Champ, it has added reverb, a footswitchable raw control, footswitchable tremolo with a half-speed switch, and a voltage selector for the HV (drops B+ about 40 volts).
This one is built in a TT021 (mesa-style) chassis, which I must say is a far more comfortable experience than wedging it all in a tweed-style box.
I used Dirk's relay board to switch the trem and boost. Hammond trannies, with 4/8/16 ohm impedance.
The reverb gave me fits. I just had problems back and forth with it, mostly due to a remarkable series of brain farts, the like of which I don't think I have had in years, and probably due to the lead content in the solder.
I did learn one thing. Don't put the reverb tranny inside the chassis. It is likely to cause all sorts of nasty oscillations.
Here's a quick video:
https://youtu.be/X3QonjPrivUand I've attached photos.
No cab. The recipient is building his own, and putting AlNiCo 8" and 10" speakers in it.