I see upon re-reading my post it appears that I am saying that designing for specific brands of tubes is ridiculous. Thats not my intention to say that. The ridiculous part was meant to apply to your speaking up about those easily angered by differences of opinion. I understand well that scenario of two or more grown men red in the face over ... what??? Your point is well taken. I still would be interested to know what criteria would influence the change of a design from one brand of say el84's to another brand.
Wayne mentions Rosenberg, he was mildly entertaining at times but his attempts at humor tend to wear thin quickly.
I think now; upon remmembering carefully, that I might have assumed the interstage transformer statement due to an earlier post you made concerning Sakuma's designs and how weak they sounded. His schtick is all transformer coupling so I put two and two together. Bad idea.
Where can we read up on your little portable amp? I used to carry an auto amp with a 110/12 volt converter and two minimus 7's as a portable system, it would be nice to have a portable tube unit for outdoors. J.R.(Thanks for the heads up on the interstage transformer winding guy) It would be nice to see some dialogue on that very subject.