Thing is, you donít need a spectrum of people to achieve statistical significance. If just one person can spot the difference significantly, then there is a difference. Scale the test to another 5 people, who all fail it, human nature...

Thus, I think the best type of ABX test is at home, in your own system, your own music, not some strange lab.

End of the day, most people on this forum are very experienced listeners, who look out for things that most donít, to a fault sometimes he he.