Thanks for posting that link. I have read Amir's reviews for some other audio gear and they have been reliably accurate for the reviews I have read.
One thing that I have concluded from the methods Amir uses (and the results of the tests) is that there is a lot of discussion about how much difference there is between the results of the tests.
There is very little mention that the audible difference is negligible (or nil for many people) between a SINAD (at 5 watts 4 ohms) of 113 (best of all gear tested) and SINAD of 78 which the site calls "FAIR."
While accurate, this difference should not have much relevance when an audio enthusiast is comparing gear and making a purchasing decision.
The test result is as misleading as the specs claimed by many manufacturers trying to make sales to people who have little or no opportunity to hear the gear and make a relevant comparison.
Getting relevant data on audio gear is nearly as difficult as knowing who was responsible for killing JFK.
This Carver site is a notable exception and the administrators and contributors here have my gratitude.