Originally Posted by DaveLadely
Every company that produces an inferior product is against double blind testing because that is the only way to separate promotion, marketing, power of suggestion, hype, from the person actually being able to compare products without the "filters", on a direct one on one, ears only comparison.
Even then, though, a person's bias can affect choice, but at least its not contaminated by B.S of promoters. Some are biased toward an overall "warm" sound. some prefer an "analytical, cooler" sound. Either amounts to a coloration of the original sound, in imposition of the listener's preference as a sort of tone control, as if the product itself was a musical instrument rather than a device designed to reproduce most realistically.
Too bad its impractical to have the original musicians in the room, then the person could listen to one product, compare that to the real music, then the other product, compare that to the original music, without knowing the brand of either one.
Whichever product sounded most neutral and accurate would hopefully be the chosen one.
Cables lend themselves very well to double blind testing, to the vexation of the manufacturers of very expensive cables and those who judge cables by the sound of their names, their physical beauty, and, above all, the persuasiveness of the marketers and the "true believers" of the advertising hype. And who would be far far better served to put the money wasted into better speakers. But like P.T. Barnum observed, "There is a a fool born every minute".
Whining about test instruments sounds a lot like the days when snake oil sales people complained when they were forced by law to prove their products worked. Anyone who says test instruments are unnecessary to help make choices is likely hiding something, because knowing distortion figures, especially the ones the ears are most sensitive to, is an important way to eliminate the badly designed products before considering those that have low distortion. Manufacturers used to simply lie about distortion and power figures before the advent of accurate measuring devices. The measurements are themselves based on human hearing, and are used to separate the wheat from the chaff. After that comes the audition.