Amir and Blind Testing

Here’s an actual smart person (who designed the powerplant) showing how to measure a power conditioner.

Speakers are measured on a Klippel and are usually listened to in mono.  Amir's listening part of the review is his opinion and in no way meant to influence your purchasing.  I don't own speakers recommended on ASR but I do appreciate the effort put forth by Amir in his speaker testing it gives one a good look as to if the speaker has been properly designed and how well it can be adjusted by DSP.  How you like speakers to sound is entirely your own preference. 

You have to live with something for an extended time before a judgment can be made as to its worth.  Comparative experience is also required to make any meaningful statements regarding the performance of any gear.  Measurements can tell you what something is doing electronically, but it can’t tell you how it will sound to your ears in your system.

You are perfectly right to say so....

I too appreciated Amir effort and journey with his tools and investigations...

I went on his site and even try to participate few years ago...

But i guess i did not appreciate the ideology of his vast court of disciples attitudes toward listening experiments at all...And sarcasms instead of an opened spirit...

I never go back... Why ?

Because we choose a piece of gear not mainly by numbers, measured numbers are only the necessary beginnings but the last word about choice of gear is by listenings or/ and analysing ton of reviews or others opinions....

Amir is honest to himself and do what he want to do and it can be useful because he inquire about claims yes......

But "the measuring tool fetichism" ideology of his disciples crowd worsen and impede listening experiments in acoustic and psycho-acoustic by making belive to people that the S.Q. results come more from the gear specs itself than the link between the system and the room/ears acoustic and psycho-acoustic relation...

The "tasting gear brand name fetichist" group and the "measuring tools gear fetichist" group are linked together by the same underestimation of ears/room objective acoustic and subjective psycho-acoustic CORRELATION experience and experiments...

Consumers are conditioned by the market like the RCA dog listening directly the gear pavilion  or reading some numbers on a dial like the dog master without NEVER analysing the relation between the system as a whole the specific ears and the specific room...

i am a free thinker and i dont like groups...Anyway....😁😊

i admire Amir for sure but despise "yes man" then i cannot stand the disciples attitude toward something OUT of their perspective ....I am human myself and far from perfection...

I don’t own speakers recommended on ASR but I do appreciate the effort put forth by Amir in his speaker testing it gives one a good look as to if the speaker has been properly designed and how well it can be adjusted by DSP. How you like speakers to sound is entirely your own preference.

Prof, with all due respect, Amir’s approach still assumes that he is measuring everything that matters in terms of ultimate sound quality. I think that is unlikely to be a valid assumption. If Amir’s assumption of perfect measurements is invalid, then the importance of human listening cannot be excluded from any evaluation of a product designed to improve the sound quality of reproduced music.

Amirm is coming to the question with knowledge about what type of distortion is possible, and what type of distortion is audible (given known thresholds of hearing).

If there is some OTHER form of distortion Amirm is not measuring for that would be audible...what would that be?

Shouldn’t PS Audio have identified just what that distortion was...if they even came up with a solution for it?

Yet PS Audio isn’t telling us they’ve identified some unknown type of distortion. They are saying their product fixes the AC power in standard ways that any engineer can understand...and test for! Which Amirm did. Amirm tested the effects of the regeneration on the power AND the effects with an amp hooked up.

What else could he possibly test? Simply waving at Some Mysterious Yet To Be Discovered thing no more helps PS Audio claims than it does anything at all.

As to Amirm not performing blind tests, I agree those would be a nice addition.

But given the objective evidence already showed distortion differences known to be inaudible, there isn’t any good reason to presume they’d be audible in blind tests.

PS Audio could, of course, always show otherwise. But we know they won’t. (The best inference being: because they couldn’t demonstrate any mysterious unmeasured audible distortion).