Pro 'Burn in' time.

[yabaVR]

...
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.

Ok, I said for most events. There is ever a chance of psychoacoustics as a case of origin.

But I was involved in so many cases of modifications (as with customer systems or in the shop or with my own system) that were altering the SQ of an audio system that once you witnessed these multiple occasions you know how fragile this whole scenario of audio reproduction is. Everything counts at the end and be it the slightest touch of a cable on the floor. You won't believe it until you hear it.

The term 'lame excuses' is a bit aggressive I have to admit.
But from my experiences the term 'psychoacoustic' is too often (with offending intense (not here )) used ( and I'm fed up with it) when in fact there are sensible reasons for repeatable SQ-changes but only not understood.

It's the same every time: 'You can't meassure it' 'science says other' 'I'm an educated (school) scientist. There is no way this can be' . All this arguments without a foundation.
It is the golden rule of science: If they can not meassure it and they don't know it, have no explanation, it HAS to be 'psychoacoustics' 'placebo' and the like.

I do not have all the answers myself. But I rely on my experiences and they tell me other than 'psychoacoustics' in many occasions.

gui

edit: this was perhaps a bit emotional . No offending though