When listening to title "In the closet" by Michael Jackson, I found the percussions disjointed compared to the bass on background. This impression decreased with time , either because of burning or because I'm getting used to the sound.
Regarding your statement about DAC/Amp: well the sound from my xonar stx was better than my cowon s9, then obviously something matters. I have noticed slight changes with amping (I mean high gain , instead of normal gain on xonar stx) , but not necessarily good ones, so I prefer to "not amp".
About burning: I observed drastic changes from burning with my sennheiser IE7, on first few hours. I believe it evolves in a logarithmic way, i.e the more you burn, the less and less there are improvements, until you notice nothing.
About blind test, I do not completely trust this kind of test for various reasons:
- you must concentrate on samples and compare, which doesn't represent an overall and natural experience
- hearing fatigue: yep you ears are less and less sensitive, when you replay the same samples endlessly
- the way your brain become "biased" by expecting differences even when they aren't.
- infrasounds , from wikipedia: "Infrasound has been known to cause feelings of awe or fear in humans. Since it is not consciously perceived, it can make people feel vaguely that supernatural events are taking place."
Edited by extrabigmehdi - 9/3/11 at 12:14pm