Dual triode and the schematic seems to indicate two tubes, each pin has two pin numbers associated - presumably this means there are 4 sections in parallel. I'm not sure, language and drawing issues confuse the matter.
Faux ... La réponse est perturbée par l'inductance, la capacité et la résistance du câble coaxial utilisé entre l'entrée et la sortie ... Sans parler de l'absence d'adaptation d'impédance et de gain qui sont les raisons d'être d'un préamplificateur !Almost !
You've just forgoten the "magical" deliberatly added 10pF that makes this preamp "the best"
Here is "The Better Preamplifier Of The Whole Know And Unknow Universe" :
Yves.
Alain.
P.S. I like very much your tubes curves tracer design using the powerline sinewave and the sound card inputs for the voltage and current simultaneous reading ... You are a "pro" !
It's not really clear to me whether it uses 1 x 6N30 or 2 x 6N30, the tube is a dual and the schematic implies to me based on the pin# shown that there are in fact 4 triode sections in parallel.
Yves, I love the last line in your copyright statement..
I like your say: *Your preamplifier will sound harsh and clinical, even though it will measure almost perfectly*
thanks
I think you need at least 6-8 sections in parallel to call it the "best preamp"
No!
Please say* The best my PRE *, not for all
An not need many many Tube
i understand your circuit, what i want to know is if you match your tubes for transconductance between sections and between tubes?
or do you just stick them in like i do?
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