As a matter of fact, it forced me to re-check myself as I was critically listening to 2 different power supplies on my SB 3 this evening.
But since sighted listening tests are known to be flawed with regard to determining actual audible differences, why would simply repeating the same flawed test bolster your confidence?
se
Good question, and the answer is simple. Because as a recording engineer I've been doing it long enough to have a great number of reference points to make assessments as to differences between 2 things. I use certain cues and clues to tell me where those differences are most audible.
When tweaking sounds in the studio, we sometimes spend countless hours fine tuning on sounds. The great thing about the studio is you can do rapid fire testing. You have disable switches and so forth that enable you to do rapid fire back and forths. You also have programmable memory banks so that you can toggle back and forth between 2 modified programs of the same algorithm with minor tweaks.
For example, you can alter the pre-delay on a digital reverb algorithm for say, a drum kit. You can alter it by 10ms lets say. If you were to simply listen to the drum kit playing through the stock algorithm, then stop, scroll though the preset, alter the single parameter of pre-delay by 10 ms, then listen to the drum kit through this modified algorithm, about 45 secs would have passed between "takes". It would be hard to hear what the differences would be.
But, if you had the "stock" algorithm stored as a preset in a memory bank, and the modified algorithm as a preset in a memory bank right next to it, you just switch between the two, rapid fire, and listen. It is a
great way to hear differences.
When you've been doing that for 20 years, there are a number of things that you know what to look for as cues. Frequency response, early reflections, transients and so on. It would be hard for me to decribe in writing clearly, but in a demonstration it would be easier.
And that is, why do you seem to believe you're somehow much less likely to subjectively perceive a difference even if there may be no actual audible difference than anyone else?
Just years of doing what I just described. It can be a curse though. It's hard sometimes to be a casual listener. But the same goes for being a musician. I can't listen to music without listening to the players and figuring out "what" they're playing while I'm listening. That's a curse as well.
Why would you need to do that? The power supplies you're comparing are only powering the SB3, not everything else in your system. So why couldn't you simply make the recording straight off the SB3's output?
Y'know, it's funny....I posted my original idea first thing this morning, then as I was taking a shower it dawned on me to do just what you described. I'll just record the analog outs of the SB 3 into the digital recorder in my studio. No need to mic anything. Doh!!
Or any guys canned for that matter. 
Yeah, no need to kill the thread. If a guy posts something out of line or insulting, just remove his post from the thread, and notify him by PM to behave in the future. They'll get the hang of it pretty quick I'm sure.
Cheers
