Hi Steph 'n' all. Started to collect parts for this project. Regarding the output transformers. I'm in Melbourne Australia. Unfortunately, the cost of shipping from the States will most likely render the Thermionic option too expensive. Would you please provide the full specification of the OT's. Current schematic just says 4.3K 25W. Is that it? Cheers from down under. Adrian P.S. Thanks for being such an inspiration Stephe!