Excellent article in Stereophile


This is one of the most interesting articles I've read on harmonic distortion and its affect on sound quality and why the classic THD is a worthless specification. 

https://www.stereophile.com/content/harmonic-convergence-effect-component-tweaking
128x128jaytor
This is actually an old article that was republished, but worth a read nonetheless.
It is worth reading for research sources, but I find the article itself riddled with opportunities for more questions, and honestly, self promoting.

I'm definitely going to have to go back to those footnotes though.
I have and cherish and yes full disclose sold them eons ago one of the first SS amps to take advantage to Dr. Otolla research into TIM, the venerable Audionics CC2
....we also had Other brands chasing vanishingly low THD and they hurled in comparison