There's nothing. It's something that's been made up by so called "audiophiles" to justify heavy investments in equipment whose performance does not help with anything.
Our ears are degenerating with every year, but the older those people get, the more expensive the equipment has to be, otherwise they can't grasp the soul of the music etc. pp.
Our ears are degenerating with every year, but the older those people get, the more expensive the equipment has to be, otherwise they can't grasp the soul of the music etc. pp.
It's just an excuse, CDs are fine.