This is based on the Metasonix TS series. It will have two dual thyratron VCOs, two beam modulators, two pentode filter banks with incorporated VCAs.
Eventually it will get a Hellfire modulator as well. This synth is intended to be fully compatible with my solid state devices.
Eric Barbour kindly released the schematics for DIYers to enjoy, get over to CGS synth and peek into the TUBE section. The PCBs are my own design (not for sale!)
As usual, the panels are recycled from old lab gear.