Pro 'Burn in' time.

[Confused]

...
I don't believe in psychoacoustics for most events they are suggested to be the case of origin.
For me psychoacoustic argumentation is a lame excuse of phenomena that can not be explained and if there was an explanation, it would not fit into the believe system.
...
What you hear is real. I trust your ears 

Gui - I hope this is not entirely off-topic, but I don't understand how you can reconcile those two statements.  I agree very much that one should trust ones ears, but doesn't that inherently mean that you must also accept that psycho-acoustic effects will be important?  Surely when ears and brain are "in the loop", psycho-acoustics is more or less the whole explanation of everything!  Conversely, if you said "trust measurements, not your ears" then you could reasonably argue that psycho-acoustic effects should be ignored.  In any case, I think to describe them as "lame excuses" is a bit unreasonable unless one can offer a compelling (and testable) alternative explanation.

Actually, I can see two sides of this argument.  Many times I have seen one person reporting that they have tried A, then tried B and noticed an improvement.  Then someone comes along and says 'it's just expectation bias'.  OK, sometimes it might be expectation bias, but if I were to say that I listened to a full dCS rig with 100K amps and speakers and found it to sound better than the same song played via my iPad speakers, this would be because it does indeed sound better, so expectation bias does have it's limits.  I do recall a microRendu thread on the Roon forum, whatever anyone said something about how the thing sounded, one guy responded 'it's just expectation bias', this gets annoying because although expectation bias exists, it works two ways and does have it's limits.  Does my very new Devialet sound a bit more forward, maybe more treble emphasis, yes, I am certain that this has been the case.  But for sure, at times I have been listening very hard, analysing, thinking, this is not normal and I'm sure it does change your perception.