>> 1.) Heath and Gonset did not make any more four parallel
>> tube amps using tubes with high feedthrough capacitance.
>> They had no reason to put it in other amps.
>
> Valid point, Tom, but Heath used the 572B in a subsequent
> amplifier and they chose not to use RCA's g-g
> "neutralization" circuit.
What four tube amp was that Rich? I can't seem to recall it
even though I did various RF designs for Heath.
Who at Heath told you they chose not to use it for the
reasons you mentioned?
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