Agree with Tireguy...Didactically is off base here.
So far, no one (that I know of) has been able to determine that a particular type of measured results always yields the best sound. True, measurements that are far outside accepted norms for the design in question may be suspect, but distortion measurements are less important than commonly believed. Remember the Japanese contest to achieve the lowest THD? Those units sounded like, well, shit.
The best measurement tool made is between your ears. A well engineered tube amp or preamp can yield a wonderfully musical presentation, and it's not due to "coloration".
Search the archives and you'll find plenty of info to assist you in your search.
Have fun!
So far, no one (that I know of) has been able to determine that a particular type of measured results always yields the best sound. True, measurements that are far outside accepted norms for the design in question may be suspect, but distortion measurements are less important than commonly believed. Remember the Japanese contest to achieve the lowest THD? Those units sounded like, well, shit.
The best measurement tool made is between your ears. A well engineered tube amp or preamp can yield a wonderfully musical presentation, and it's not due to "coloration".
Search the archives and you'll find plenty of info to assist you in your search.
Have fun!