Originally Posted by Marleybob217
I know there is some evidence of burn in, that thing tyll did with the akgs a while back.
There is evidence of brain burn in (to a degree) the brain adjusts itself constantly. When someone's ear get damaged, and can only hear about 50%, a couple of weeks later that individual will regain 90% of his hearing capabilities. This is not because the ear heals itself, but because the brain adjusts for the damaged ear. I think this is a pretty extreme case of brain burn in.
Also the 'proven' burn in of the akgs tyll did, were not severe at all looking at the before and after frequency response. The difference could even be caused by a slight misplacing of the headphone on the dummy head. As a scientist I would not call it proven. IF there aren't any other actual experiments.
I think you misunderstand me; I'm not a proponent of driver burn-in per say, or of brain-burn in either ( I'm an agnostic on this issue until real evidence rolls in, but note: I do favor the brain-burn in theory). With that said, please understand: folks who make the brain burn-in claim tend to think that they can make such claims with impunity and without the aid of the scientific method, while ridiculing the driver burn-in crowd for lack of evidence; that is the very definition of unfair, friend. The example you use above (in bold) is an example of brain plasticity, which is not really an example of brain-burn in at all, if we are going to adhere strictly to the term as we use it on head-fi. I know this subject is becoming verboden (I apologize for bringing it up again), but I think the point needs to be made. The so-called evidence for brain burn-in is all anecdotal (the same for drive burn-in too, mostly); that's to say, no one has attempted under strict scientific conditions to test this claim. If you know of a journal or scientific study that has tested brain burn-in as it strictly relates to our perception of audio, near-field audio in particular, please send that article to me--I would absolutely love to read it. (And I mean this in earnest too.) So once again, I think we should all keep an open mind on the subject or at least maintain an agnostic attitude. That's all I'm saying. Nothing controversial. Now back to the originally scheduled program: He-400 Love.