FYI: Octal Metal Valve Striptese

[rp]

Ever wondered about those American Metal Valves?

http://www.r-type.org/static/6j5.htm

Maybe this is old hat here - I thought it was cool, and saved me the effort of cracking one open myself. Still can't believe these things keep vacuum for 60 years.

[Reeltarded]

haha I have been sucking for 47. I don't think it's a miracle.



Ok. That tour makes me a little funny about the times I grabbed one of those with the power on.

[M Fowler]

Some of my 6SQ7 metal tubes are less microphonic then my glass versions.