I came across this site the other day.
This guy is interested in tube ccts.
Kind of interesting.
Sells some components.
IMO, a nice site. ( no Arduino stuff though, things are a bit older 
)
.
Hi,
Wow, nice, he has put a lot into it, especially the servicing notes and his product line.
Tom... 
Couldn't a lot of those be done as really simple PCBs?
Why mess with all the turrets?
I built one of these amps the summer before I got into Arduino
http://www.ax84.com/
I think it's this one
http://www.ax84.com/hioctane.html
Couldn't a lot of those be done as really simple PCBs?
Why mess with all the turrets?
I have a friend who does this when he makes tube amplifiers.
He insists in having the old school look.