As per? ??
You're dating yourself with that cathodes thing.
But most of us are old enough to follow.
Jerry
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On Wed, Mar 7, 2018 at 10:21 am, Arv Evans wrote:
Possibly use an op-amp for the audio pre-amp and follow it with an NPN-PNP
pair.? Feedback from the NPN-PNP cathodes to input of the op-amp (with resistive
divider to set gain) and you have a composite replacement for integrated audio
amplifiers.