Originally Posted by Brooko
I won't continue on - simply because it's a polarising debate - and realistically the same things get rehashed over and over. I respect your posts too much to put myself in a situation where there is no real middle ground and we are on completely opposite sides (call it a cop-out, but experience tells me to continue would be a downward spiral - rehashing all the now familiar points)
I'm yet to be convinced - especially with comments like these .....
I've yet to hear the night and day diff people talk about - and I know my own aural memory is no good after more than a minute (actually a lot less). I freely admit to probably having tin ears as well .
I will suggest going back once again to Tyll's measurements showing something happening (and possibly something audible) with the 701's - but with actual measurements that clearly show any change to be minute / subtle.
I don't doubt you are experiencing something changing. I'll continue to be largely skeptical it's mostly due to 'burn-in' though - unless I hear it/experience it myself.
I'm burning in earpods (60+ hours). I don't notice the slightest difference in sound signature. I've burned in several other pairs, and I agree, psychological "burn-in" is very real--the same headphones can sound very different from day to day, depending on volume, the sources, the use of an amp, what headhpones you listened to just prior, etc.
However, the igrado change was not subtle nor psychological. They were unlistenable and tediously bright. After 60 hours, the very harsh treble had basically disappeared, replaced by a full, warm, bright sound that was exceptionally pleasant.
It's the only pair that changed radically, but it's enough to convince me that in select cases, significant changes can occur. But for my other headphones, the changes have been modest to completely non-existent.