the grey box is a Paeco from a HP timer. It ran about 35 12AU7's with a regualted power supply.

The three holes in the front right are for the volume pot and the two input jacks. I wanted short enough runs to avoid shielding if possible. There are two holes in the back behind the amplifier section for the output jacks.

The PS runs two damper diodes, 6AX4's and the amplifier runs 1 12B4 and two 12BY7's per channel. The 12BY7's form the active load/output bufer like the cascode MOSFET circuit used in Guinevere's plate loads. I hope it works, I haven't tried it yet...
regards,
Douglas