Frank Gilliland wrote:
As far as "matching problems", if you are referring to mismatched gain
in transistor pairs, that only causes harmonics. If the mismatch is
great enough to cause one transistor to run hotter than the other,
that would be due either to component failure or ****-poor quality
control.

No, I'm talking about impedance matching problems. On the input is not
a big issue... only reducing the available drive... but a mismatch on
the output is critical... and causes big problems with excessive
transistor heating... leading to premature failure.

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