I agree with Ohlala. I think the way to test A vs. B is to try to detect differences, NOT try to identify the sound of A or the sound of B. IOW, blindly and randomly compare 2 power cords together (AA orAB or BB) to see if you can discern a difference. Your response will be : Yes, there is a difference between the two or No, there is no difference. Repeat this random pairing 10 times and see if you could detect differences when the pair tested was indeed different(AB) and see if you were correct identifying when a pair was indeed the same(AA, BB). If the results were close to 50%, then you could not detect a difference between the 2 PC's. This way you are not required to know the unique sound of A(or B) intimately enough to identify it right away. I'm not sure this makes the testing anymore valid but I would think it should make it easier to do better than chance. Subsequently, if a difference can be discerned between 2 PC's then you can try to decide if the difference was significant enough to justify any price differential. Also you can decide which PC's sound you prefer and why. This can be ascertained with long term listening tests.
Blind Power Cord Test & results
Secrets of Home Theater and High Fidelity teamed up with the Bay Area Audiophile Society (BAAS) to conduct a blind AC power cord test. Here is the url:
http://www.hometheaterhifi.com/volume_11_4/feature-article-blind-test-power-cords-12-2004.html
I suppose you can interpret these results to your follow your own point of view, but to me they reinforce my thoughts that aftermarket AC cords are "audiophile snakeoil"
http://www.hometheaterhifi.com/volume_11_4/feature-article-blind-test-power-cords-12-2004.html
I suppose you can interpret these results to your follow your own point of view, but to me they reinforce my thoughts that aftermarket AC cords are "audiophile snakeoil"