The question was that if headphones of almost the same price give a different sound, then why buy the HD820 those that are worse for you? In all respects, it is more correct to have one perfect KSE 1200-1500
And now we have come to the most important thing - the musician makes one sound image. After he has recorded the song, he usually listens to it on not very expensive professional sound equipment and says - this is what I wanted to hear when I created it. He doesn't make ten different sound options - just one.
When you listen to different very expensive headphones, you hear one and the same sound composition in different ways, not as it was intended by the musician - what is the joke and the meaning of such a false listening?
Wouldn't it be better to take an expensive sound DAC from such companies as the Grace Design m900 NuPrime DAC-10H, or iRME ADI-2 Pro FS and you will hear differently in Sennheiser HD 800 S or HD 8020 sound in its original form, as it was intended by the musician.
Personally, I have tried everything and I am a very big perfectionist and sophisticated at it. And now I can say that, for example, the combination to a minimum - Grace Design m900 and Neumann NDH 30, and give everything you need to hear the music as it really is, no less and no more details, no wider and no narrower stereo and sound stage , no more and no less frequency response over the entire range and so on.
So why spend more and get an unreal sound?