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Questions about tubes and gear that glows. FAQ

RE: Who can tell me about this tube?

from the description of the 12AU7 CEI's that I bought.

"CEI stands for Calvert Electronics Inc. They usually sold tubes made by Mullard. Careful inspection shows that these are Mullard internals…just like the old logo Mullard we sell. The codes etched in the glass show they were made in the Mullard-related factory in India. Which is a really good thing. They have that famous Mullard midrange texture that cannot be denied."

Philips owned Mullard, right? So I guess that is the source of any confusion.
Andrew


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