Ralph, yes, that is very conceivable to me, even in the cases of the most astute and sincere listeners. As you’ve probably seen, I’ve mentioned in many past threads how easy it is in audio to attribute a perceived change to the wrong variable. And even if steps are taken to assure that comparisons are made under equal states of warmup, just the fact that power has been cycled could conceivably result in perceptible differences, especially if the component includes significant digital circuitry. We all know how the behavior of a computer can often change when it is rebooted, usually for the better. And unlike a computer the sonics of an audio component may additionally be susceptible to differences in the levels and characteristics of internally generated digital noise that might result from re-initialization of the circuitry.
Best regards,
-- Al
Best regards,
-- Al