@amir_asr thank you for your reply. Here is what you said:
With other classes of devices, impairments get very small to non-existent.
What devices specifically?
I simply don’t have the time or resources for this type of testing. So measurements plus psychoacoustic analysis stand in as substitute.
I take that as you basically back fit the test to get the outcome you want. Why not outsource it to a third party and not have to guesstimate it?
Stuff subjectivists report are like fantasy to me.
I understand that you are not able to measure your fantasies and so do you discount the subjective experience of your customers? Why are you selling audio equipment and trying to post reviews (albeit even though you state you lack the time and resources to be as thorough as possible) on a topic which you seem unable to connect with which is as subjective as a listening experience.