"Thomas A" wrote in message
newsBUUa.141509$OZ2.27088@rwcrnsc54...
Is there any published DBT of amps, CD players or cables where the
number of trials are greater than 500?

I've never seen one. It would be difficult to get a single subject to
do that many trials. So, it would have to be many subjects and they
would have to be isolated to prevent subtle influence from one to the
other.

If there difference is miniscule there is likely that many "guesses"
are wrong and would require many trials to reveal any subtle
difference?

(Note that the word is spelled "minuscule.")

Norm Strong