Amir and Blind Testing

invalid, my subsequent post mentioned it was a typo.  See the correction.

Okay sorry

What people like @Prof are ignoring is that according to PS Audio, the fake science site (my term) measured the wrong AC output. Has anyone seen them publish a revision or retraction?

I’m not ignoring anything: it seems you who is leaping to uninformed conclusions.

Did you not see that Amirm did a follow up review taking on all the issues that cropped up after the first one?

The problem wasn’t Amirm; it was that PS Audio’s own user manual made no mention of a difference between the ports, that one was limited in any way, and Amirm did what any user would be likely to do: use the port labelled ’High Current" for their amps. Nobody could fault Amirm for not knowing information PS Audio themselves didn’t think to put in the user manual! In fact it was due to Amirm’s review in the first place that PS Audio customers are now alerted to the fact plugging their amp in the High Current outlet can reduce amplifier power!  That's not info PS Audio was telling their customers for that model!

Then Paul came out saying Amirm should apologize for the mistake...while Paul himself was stating misinformation about he product (as shown by Amirm’s measurements) and Paul later admitted screwing up.

In any case Amirm DID take all the brew-haha to heart and did a follow up review addressing the criticisms. Spoiler alert - still no sign the PS Audio device would do what it claims for the *sound* of most amps:

No problem, invalid.  It's just that I couldn't go back and fix the typo in the original.

Aural memory is the result of a learning process, and an ability that we can develop just as any other cognitive function. Improving it is the same as learning a new skill.

When there is effort put in, it can be vastly improved upon, and conversely, lack of training will result in the decline of aural memory faculties. 

Just as we can remember words, colors, pictures, we remember sounds with analogous mechanisms. A person who can retain a 7 digit number for 10 seconds can train to withhold it in memory for an hour or longer, eventually retaining the ability to call back the number after a longer time period, and with increased digit counts.

Same with aural memory.

As every learned skill, it takes a lot of effort....some people have a head-start, but ultimately perseverance is key, and is the secret to a good aural memory.

A/B test cannot substitute an acute aural memory.... perhaps with an A/B selector switch we can cut out the time-caused retention-loss... yet, in case the aural perception and memory is so poor that it fades in seconds, then the detail observation skills are also comparatively abysmal. In consequence, the A/B tester with poor aural skills does not have the cognitive faculties to perform the test in a competent way.