Noisy NOS Telefunken tubes

[micaddict]

Here is a guy who makes his own tubes. 100% quality control!  ;D

https://www.youtube.com/watch?v=EzyXMEpq4qw

(Interesting to see how he cuts the anodes with his Swiss army knife!  : )

OK,  anyone here who's left cold by this?

 

[Timjag]

I'd love to know how they sound!

 

[Gus]

Baking the valve does not make sense unless it helps revive the getter.

When you bake a system for high vacuum you are releasing atoms from the surfaces it is mostly water.
The getter acts like a vacuum sublimation pump. In a sublimation pump the fresh surface collects the atoms.
I would guess the tube getter surface is used up after a few decades.

What Sony does with the C800G makes more sense.
I believe Sony chills the 6AU6 like tube walls to adsorbed(not absorbed) atoms
I believe they are running higher anode current to get a lower dynamic output resistance
This also means there might be more grid noise.