Originally Posted by Hairspray
You are convinced? And shall we know why?
Anyway, small sound differences or not Tyll needs less than 5 seconds (5!) to hear a difference, which is very short.
That means the difference is clearly audible (as his assistant also says at the end).
Furthermore, he probably notices a diffence immediately but waits a few secs to make sure he is right.
What do u want more?
When some people say "night and day" they probably just mean "clearly audible".
So in your opinion all Q701s with burn in sound exactly the same and all Q701 without burn in also sound exactly the same? It's impossible that you simply have two different sounding pair of headphones? Sample variations? The differences are automatically attributed to breakin?
All we have here are two different sets of Q701s which sound different; this is assuming that listener based his choices 100% based on the difference on sound; that the pads are exactly the same, the feel (clamping force) of the headphone were exactly the same, etc. and that the sound was the only factor taken into factor for the identification. But of course, why would you make an assumption which could very easily render the whole test irrelevant?
But breakin/burnin does seem to happen, it's been measured with speaker drivers (http://www.gr-research.com/burnin.htm) as well as headphones (http://www.innerfidelity.com/content/evidence-headphone-break), but 1000 hours definitely seems to be an unreasonably long period for for breakin ... Might be clamping force, pads, placebo, simply sample variations, etc.
Edited by GirgleMirt - 9/3/13 at 5:06pm