i have a ps audio perfect wave dac and transport and can report hearing no diffference between leaving the dac and transport on --i did this for one week and turning on each component prior to listening.
i have also not noticed the phenomenon of warm-up using tube preamps, tube amps and tube-based cd playerss.
i have noticed the affect of break -in of components but it doesn't seem to matter to me who long a component has been left on, as far as its sound is concerned.
perhaps this is another example of the placebo effect.
oh well, we all have our opinions on this and many subjects are almost impossible to confirm, i.e., demonstrate their existence.
i suppose, if one owned two of the same component and left one on while turning the other on and off an experiment could be designed.
note some people have more acute hearing and while others make be erroneous with respect to their perceptions.
i have also not noticed the phenomenon of warm-up using tube preamps, tube amps and tube-based cd playerss.
i have noticed the affect of break -in of components but it doesn't seem to matter to me who long a component has been left on, as far as its sound is concerned.
perhaps this is another example of the placebo effect.
oh well, we all have our opinions on this and many subjects are almost impossible to confirm, i.e., demonstrate their existence.
i suppose, if one owned two of the same component and left one on while turning the other on and off an experiment could be designed.
note some people have more acute hearing and while others make be erroneous with respect to their perceptions.