why a 75 dollar blue ray smokes all 2k CD players and any turntable???

Loudspeakers do distort the most however modern drivers with symmetrical magnet systems and have distortion that is magnitudes lower any mass market driver. Also of note is that driver distortion is primarily 2nd harmonic which is far less objectionable than higher order odd harmonic. In my system the digital playback was for the longest time the limiting factor as all of the speakers I have had for the last 20 years have been types with vanishingly low distortion. When the system is up to par the quality of the source is paramount. When there are lots of compromised component choices you are just shuffling cards around. 

In reality this is the oldest argument there is but with a fresh twist. You can not tell crap when its played through a poor setup.

@rodman99999 
Elitists are so tedious.

"why a 75 dollar blue ray smokes all 2k CD players and any turntable???"
This might be true, if digitally connected a mediocre multichannel receiver with really bad phono-in.

A   "75 dollar blue ray " is some cheap mechanic - which mainly works or does not - and a DAC with powersupply.
The DAC chip will convert internally to 1 or 4 bit, because that is what cheap Delta-Sigma DAC chips fo. This does not make too much damage, given that the tiny tiny powersupply is not giving consistent support allowing for a proper tonality.
The better mastering of the Blue Ray Disk might sound better than the loudnesswar mastered CDs OLSCHOOL usually listens to, though.

I have more than a dozen recordings, originally done before digital mastering, on both vinyl and digital.  While there are real differences between them, I find neither to be superior.  There are things I like about each that are better than the other, and none of them surpass the sheer enjoyment of the music itself.

I still have the first LP I ever bought, while in high school back in 1968.  I have many LPs that will never make it to digital.  But for newbies, vinyl is just not cost effective.

I run a $200 Tascam CD player with an optical link to a good DAC.  Digital data is reliably transported.  That's why we like it.   The difference is all in the DAC.   All CD and DVD players have one built-in, but they are typically pretty cheap.  They sound OK, but taking a direct digital feed from a cheap player to a good DAC will give you very happy results.

Russbutton:  Exactly.