So I just realized that the PT is actually the one from Antique Electronic Supply, the one that is listed in the book along with he Mojo and Weber ones. I looked up the specs on it and it says it has a 2A filament supply instead of 4A, like the others. The book specifically refers to the filament having a 4A spec. So, is 2A going to be enough? Why is the AES PT recommended if it doesn’t have a 4A spec filament supply?

Another question is that this AES supply only has a Red/Yellow lead, so I’m assuming it has a center tap and doesn’t require an artificial center tap correct? I just connect the Red/Yellow lead to ground, right?

The spec on this PT are here: