Ime THD does not correlate well with subjective preference. Imo THD is not the right yardstick to be measuring with; a horn or amp or whatever can have excellent THD numbers and still sound pretty bad, or have bad THD numbers and still sound excellent. I'm not horn-bashing here; I'm THD-bashing.
Better yardsticks have been proposed, but the industry has ignored them.
Better yardsticks have been proposed, but the industry has ignored them.