I want to hear actual real world listening opinion ;) Have seen those graphs 100 times already. And btw, don`t remember exactly which way it was but HD-681 B version stood for "balance" and HD-662 F was equivalent to "balanced" not B version as some might think. In case of HD-662 series B means "bass". Anyway it is opposite to HD-681 series.
Edited by CoiL - 12/11/13 at 4:26am