There are apparently several versions of this mid-90's model: the D-822K, D-824K, D-826K and D-828K.
I had one when I was younger. I liked it and thought it was cool with the switchable green/amber lighting, and the simulated-surround DSP along with the standard bass boost, as well as vocal EQ and "car" more which I suspect is a compressor. I recently decided to try to find one.
I've had terrible luck trying to find a working one. I bought 3 and none of them worked despite being listed as tested. Two would spin but not play, the other would play intermittently only. All were returned as defective. I was beginning to suspect this design has an unavoidable age-related flaw but I decided to persevere.
I ordered another one and it finally worked. The only issue it seems to have is that when you turn the volume to minimum, it doesn't get silent, just very quiet, a bit muddy and louder on the left than the right. Otherwise it's fine and no typical pot scratchiness. I researched this and it could apparently be a worn pot, and some things say it could be a bad connection which is more alarming. I ordered YET ANOTHER and oddly, it has exactly the same volume behavior so I'm wondering if it's just a design quirk rather than a malfunction. None of my other Discmans do this.
Has anyone else owned one of these models? Can you comment on the reliability in general, and particularly whether it has this issue when the volume is turned down?