[JN] Input circuit question

bear bear at bearlabsusa.com
Thu Feb 11 12:56:03 CST 2021


Looks like a triode strapped EL34??

Not so well balanced diff pair at the input??

What is the question?

On 2/11/2021 1:00 PM, sound-request at soundlist.org wrote:
> Date: Wed, 10 Feb 2021 19:00:34 -0800
> From: BBands<bbands at gmail.com>
> To: Joes<sound at soundlist.org>
> Subject: [JN] Input circuit question
> Message-ID:
> 	<CAGS5yBW00eGwiQPOb6nmFQc=GvijgHCV=CPuaru8kWFAhR77Xw at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Can one of our resident wizards give me a hint as to what is going on in
> the second stage of this input circuit?
>
> This is the source for the screen shot:
> https://www.youtube.com/watch?v=RPsZI8ZthGY

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