I know that what I'm about to say many of you will take it as a blasphemy, but this 820 drives me crazy!
I understand that listening to it at stock conditions may initially disappoint, the stock cable does not really do justice to the true potential of the 820, the sound is dreary and too distant, moreover there is no minimum control of the bass; either they are anemic or based on amplification I'm like "boom"
but give the 820 some time to burn in, a good cable and a good amplification and for me it is unrivaled in the closed field (except mdr r10).
in this case we have as dac a topping d90se, leben cs300xs for the amplification,and an invictus clear as cable.
funny sound, controlled bass, all in all a detail rendering certainly not superior to electrostatic but quite satisfactory from analytical results,
excellent yield of dynamics and three-dimensionality never perceived in a closed (I have not had the opportunity to try the r10 with leben)
I do not understand and honestly my ears do not reach the reason for all these criticisms towards 820; but have you ever listened to it well? then I repeat, maybe I will be the blasphemous and maybe this passion is not for me, but as ignorant,if I want to listen to music while having fun, getting excited, the 820 is one of my first choices.
perhaps the flaws that many of you find are the strengths that make me prefer them to many others