Break in period

Guidocorona,

I gave you a few brand names of a few consistent sounding, respected engineering and manufacturing firms (mass produced) that are well known reliable products. If, as you say yourself, your gear changes response or requires an extensive break-in of over 200 and up to 1200 hours then that would not be my preferred choice that's all. However, I don't agree nor would I dare suggest that your fantastic gear are just useless boat anchors or that you should dump your truck because of this. Peace. We probably have different interpretations of the differences heard from repeated playing of music. (what I call getting habituated or new insights from repetitive playing of music may actually all be "break-in", certainly I believe that ears/brain can be trained to become more discerning and repetition is a big part of it - so the listening experience is never identical)

Psychosomatic, huh? Or in other words. . . delusional, eh? And I thought that in 50 years of music I had reached a small modicum of insight. . . now I am really staggered by the harsh impact of factual reality!

Shadorne, are you saying IOW that you hear changes but you attribute them to yourself rather than the gear?

Has anybody measured new components with, say a spectrum analyzer or similar device(s), and measured it again after break-in and published the results? If the results are audible, shouldn't they also be measurable (all other things being equal - easier said than done, of course)? Jeff

Jeff sez

If the results are audible, shouldn't they also be measurable

Should be, I guess. BUT what would one measure? Once measured a diy phono equaliser with a friend (for other purposes) at ~2month intervals with a scope. Zilch.

Note however, that the caps had already been "treated" with a variac before they were mounted. Likewise with critical path resistors (components are important for the equalisation curve). Also, first measurement was well after first power up (a couple of hours or so).