You should also check out this thread that I found: Setup Tek 576 for Tube Curve Tracer?. There's a tube audio forum at TONews.com that I just stumbled on when looking for images.
41 posted on 12/11/2010 11:25:58 AM PST by jurroppi1
(The gropings will continue until morale improves (or) "don't TSA me bro")