20 years ago i often attended symphony concerts. When you do that i think you train your cognitive system to interprete soundstage better and have a solid reference. I dont have the same ability today so my description compared to depth of 560 soundstage might be totally off. Add i very seldom hear classical music.
I cant take hiss and crackle at the expense of details and clarity. I used to tolerate that better.
In my ears the 560 is totally deprived of that distortion but at the same time presenting many details and resolution. It still puzzle me how they got this hp to be so resolving and at the same time to sound relatively good on basicly all recordings i have thrown at it. My asumption is they have used a lot of time hearing to the hp vs focusing on measuring and engineering. It gives what i perciewe as a sweet, inviting and intimate sound. I have heard a lot hifi where its wasnt so. With this HP you start your Spotify list, and dont think of changing - its good business for Spotify and the Artists :)
This 'distortion' as you call it isn't supposed to be there and shouldn't be there with 'stats assumming you experienced the same I did. It's likely because of dust or moisture in the driver, also happens when not playing music. It bugs me a lot, cuz it's my best sounding headphone and I am very fund of them, but unfortunately I can't repair them, have tried..
Generally, I hear no distortion with the LS except the problems I am experiencing, which hasn't always been there.
I don't remember who of the new 560 owners who owned the 202 and hd800, but some words comparing them would be appreciated