It has an Soldano Avenger style power supply. More filtering in the 1st and 2nd stages. The DC heaters in this are not regulated, but are from different 2A 6.3V wind on the PT. If I built it with the switching capability it would have been cool to use 12v regulated supply for relays and some filament heat. The Elevated AC Heaters are on a higher power 6.3V wind. I elevated them to prolong the life of the cathode follower.
It's not exactly the same as a Deliverance stuck in the 'more' mode. I have changed a couple of thing by way of experimentation and I'll probably tinker with more bit. I know I want to change the pots. you know how it is right?
It has a cathodyne PI rather than a LTP, and a quad of KT77's. The D120 has buffers between the PI and power valve grids for the 4x KT88's. The D60 doesn't, but it only has 2x KT88's. I scr@pped that idea and went with nothing between the PI and octal grids. Also, the KT77's are going into a repro SLO OT. So there will be a bit of a mismatch. it does however sound LOUD!