restorer-john
Grand Contributor
I mentioned "input sensitivity" and you explained "sensitivity". Those are different.
The input sensitivity is calculated as below (for NC252MP as an example):
View attachment 135623
You still don't get it. Your post is completely 100% wrong.
Edit your "too high" and replace with "too low" (twice) and delete this part altogether as it makes no sense whatsoever:
"The worst case is if the power amp's noise floor is higher than the AVR's nominal pre-out voltage, then you end up with a bad combo. I'm not saying that Hypex/Purify have high noise floor. I just cited that hypothetical scenario as an example."
There's no power amplifier on earth with a residual noise floor greater than the nominal pre-out voltage of any preamplifier.

For the record, residual noise floors of power amplifiers are measured in microvolts. uV. Millionths of a Volt. Typically in the low tens of microvolts.
Preamplifier nominal output voltages are measured in Volts. Typically 1-5 Volts.
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