Hello, I would like to know if there is any value difference in the model 90 tube variations..I know one has one 47 output tube, another 2 45's, and I belive there were 2 others.maybe 2 47,s and one with one 45?

:Hello, I would like to know if there is any value difference in the model 90 tube variations..I know one has one 47 output tube, another 2 45's, and I belive there were 2 others.maybe 2 47,s and one with one 45?

Probably the EARLY version (below s/n 237,001) since it uses two 45s.

See EARLY CATHEDRAL page on my site for more info on the three Model 90 versions.

Chuck Schwark
The Philco Repair Bench