We constantly hear claims that are not always scientifically sound based on our current scientific knowledge - and yet some of us hear these differences. I feel the members of the circle are fairly unbiased along these lines, with each of us honestly reporting our experiences. Perhaps some of the members in larger cities have enough people to occasionally host a comparison session and report to the Circle. I'd volunteer, but Shreveport, LA is not exactly a center of high-end audio. My first example is cables sounding better when lifted off the floor. This probably depends on cable construction, but in my few experiments I hear no difference. I'm sure others have topics they'd like to see covered. Anyone with a large group of AudioCircle members nearby want to go for this?