Any update? Very curious about the result of the comparisons and I think I'm not the only one;)

Thank you all for all the replies:). I was asking out of curiosity, how can the change of eastethics create the change of frequency range, not that I'm expecting to hear the difference between 41000 and 41500 khz or to even hear those haha:)

Hello everyone, just a question, since the "old" and 2019 version of the HD660s share the same driver and there have been only some cosmetic changes done, how is it possible that the new version has a broader frequency range (9 - 41500 Hz vs 10 - 41000 Hz)? Does it affect the sound in any way...