Posted by momalley (A) on May 22, 2006 at 08:56:26

In Reply to: And about the output tubes?? (United Electron 6CA7) posted by GlassJukie on May 21, 2006 at 12:02:18:

Can you tell if the glass envelope is slightly narrower than the base? I agree, looks like Siemans to me, the smaller envelope would seal the deal.

From what I've seen of United Electron, they did not make their own tubes, but rebranded others, so depending on the time that these were originally made, they may have come from one of a number of sources. I have some UE branded 7199s which are RCA tubes.