@johnnotkathi,
Thank you for saving me from having to reply.
For those who might eschew the objective, and might prefer the subjective;
i suggest comparing the output with one’s ear in direct proximity of a loudspeakers drivers with source turned off: with most of the better new Class D amps compared to traditional Class A or AB amps. I think most will typically find these Class D amps to be quieter. I’m not suggesting the SINAD is the be all/ end all, but it is a measure of noise (and distortion) after all.