Bottlehead Kits > BeePre

BeePre2 Output Upgrade Impressions

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sl-15:
Thank you for the detailed answer and your follow up review, much appreciated!

sl-15:
I am actually not sure how they are matching the triodes because the 6CM7 has dissimilar triodes. I just emailed them about it. And I am also curious if matching is necessary for this kind of tube in this kind of use in the BeePre2?

Toobuzz:
He’s not matching within the same tube. He gives you measurements for each side of the tube and chooses a pair that measure similar.  I’d imagine that it would be important to have the output buffer triodes in the ballpark of each other, but I’d have to defer to those more knowledgeable than me to be sure.

sl-15:
Yes, if he compares from tube to tube that would make sense.

Paul Birkeland:

--- Quote from: Toobuzz on December 27, 2022, 07:07:13 PM ---I’d imagine that it would be important to have the output buffer triodes in the ballpark of each other

--- End quote ---
This is not at all critical for this application.

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