Why aren't new vacuum tubes as good as old ones?


Why aren't new vacuum tubes as good as or better than old ones? Don't we have purer metals? Precision equipment? Why isn't anyone making the highly regarded 7316s?
pmboyd

Showing 1 response by rrog

It is my understanding the materials have a lot to do with it, but I believe there is an art to manufacturing tubes and even though the same equipment is used there are different people involved in the manufacturing process.