Nearly all manufacturers do not advertise/exhibit their product measurements? Why?

This is a paper that was in the references that really resonated with my own experience, "The Measurement and Calibration of Sound Reproducing Systems". You can’t get an ideal result using just equalization/DSP, it is very limited in what it can correct. Obsessing about what DSP software comes with your processor or receiver is not as important as treating your room. 35 years of studies show listeners prefer a flat, smooth frequency response accompanied by well behaved off axis response.

I was able to get the best frequency response in my room with room treatments and DSP in combination. Without getting the in room response as smooth as possible I don’t know how you can get the best experience from the money spent on components.

The measurement and calibration of sound reproducing systems

@kota1 Thank you for the proof that cabling differences in an audio system can be discerned by average listeners with no special experience in music or audio.  How much more likely is it that trained musicians and recording/remastering engineers like my friends and I will be able to hear a difference, especially if that difference is extremely significant?  (Rhetorical) .  

Amir and most of ASR "members" deny this is a valid statement despite the scientific (blind testing even) paper proving this to be true.  
 

@fleschler , it is sad that the sites and people that are attacking the manufacturers have built their brand on promoting misinformation. It isn’t limited to just one person or site either. These reviewers/critics have misled tons of people in order to promote themselves as an industry watchdog. Maybe they simply started out with good intentions and now they are trapped and if they change their "tune" how do they apologize for giving their followers a bum steer? Thus the rage continues and if anyone wants the truth you have to rely on your own ears, your room, using free trials that vendors provide to build good will and expand their brand.

If anyone insists on controlled testing at home then get this, but I don't think it is necessary. If I am buying something the difference should be obvious:

So question, are @fair and ​​​​@crymeanaudioriver the same?

@kota1  Yes, that is the sad situation.  Possibly 100,000s of audio enthusiasts believe the same way although some  may not have adequate resolving systems to distinguish one cable from another (or other mismatched equipment problems, room problems).

I had to "prove" to my neighbor that his Pangea power cables were ruining his potentially high end sound.  I did not say I was certain that was the cure for his extremely ragged frequency bass response and his other sonic ailments, but he was open to it and it worked with just one cable to his amp (times six cables=he has a high end "sounding" system now).  Totally flummoxed (and now ecstatic) for a former electrical engineer who had believed the opposite-power cables don't matter.  

Anytime someone says where's the scientific proof that all cables sound the same, I'll send them your article.