- I've never been averse to using props during
presentations. At this point I whipped out an actual 6SN7 I'd bought
a couple of days before at Electronics Plus. Unfortunately, neither
nanotechnology nor multimedia have as yet advanced to the point where
I can make a vacuum tube pop out of the page as you read this. But,
you can turn to page and see a schematic of the
circuit I'm talking about. All is one. Or something.