Do you think the blind wine tasting back it the 70's where the French finally admitted that California wines could be as good or better than theirs would have happened if the judges had been aloud to see the labels?
If you can hear the difference with a bit of time, knowing what the equipment is and is supposed to sound like, then why would listening over a period of time, NOT KNOWING, make them sound any different?
If it all sounds the same under blind testing conditions, maybe it does all sound the same.
Wine tastes different so blind tastings only take away any preconceived ideas about a certain wine. Speakers sound different in a blind test because they have audible differences. The blind test just might takes away the same prejudices.
Or do you feel blind tastings of wine are a waste of time? If not, why?