Re: Silly question about trannys
Basically, you are correct. As long as you get the secondary side voltage the same, you should be good to go. All audio equipment that has the switch on the back for European/US voltage, simply selects different primary side tranny taps. Nothing else changes . . . except for one thing.
You'll probably want to lower the main fuse value. (Going from US to Europe.)
Increase the fuse value, going from Europe to US.