Went a little overboard on this one! Gutted the entire chassis and built a tube rectified 2xEL34 fixed bias amp with no negative feedback. Vox-like preamp with parallel input triodes with a boost switch and a reverse "cut" control.
For my buddy Todd L. in Indiana who likes AC30s.
UPDATE - Todd sent me some photos of the amp in its new home - a Twin Reverb cabinet loaded with Hellatone speakers.