Numerous support points are provided for this board, to keep it stiff. The power tranny is a large toroid type, mechanically isolated from the chassis to reduce mechanical hum. It does, in fact, look cool. Jacks are the ReAn or Cliff's nylon type, with gold-plated contacts. The audio pots are from CTS, while the Sag and Power controls are Clarostat RV-4 conductive plastic types.
Tube sockets are ceramic.
The Zeeta runs DC heaters, even for the power tubes. I found the tip shunt ground wire on the mike input jack was not soldered at all, and I also redid some of the connections on the tube sockets. Dave assures me that the currently-produced Zeetas are much neater inside. I should hope so. All topnotch, too.