I echo the above, but wanted to an important (to me) nuance for those who pursue accuracy beyond the limits of human hearing.
Usually, errors and distortions stack across multiple system components. While really bad components can be A/B/X tested accurately, good ones rarely can be. Still, imperceptible errors that accumulate/amplify can result in actual, audible differences. One can liken it to floating point computations where the error ranges grow each time and can reach unacceptable levels.
Usually, errors and distortions stack across multiple system components. While really bad components can be A/B/X tested accurately, good ones rarely can be. Still, imperceptible errors that accumulate/amplify can result in actual, audible differences. One can liken it to floating point computations where the error ranges grow each time and can reach unacceptable levels.