post #16 of 21
4/10/10 at 4:16am
It isn't a myth. It is a fact. I had the opportunity to compare a high and a low serial number K1000 side by side with the same amp and source. The result was obvious as the low serial number one had more bass. It was confirmed by several other head-fiers at the meet who weren't told which one's which. Moreover, AKG themselves had confirmed it.