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

My overall understanding of contributions of audio components is as follows:
100% = Perfect reproduction of music 
1. Speaker = 60%
2. Listening room geometry = 30%
3. Pre/Main Amps = 5%
4. Source (CD, vinyl, etc.) =4%
5. Connection (speaker cable, etc.) 1%
No matter how expensive any special speaker cable (used $50 18-AWG vs >$500), yes, THERE IS A DIFFERENCE, but the difference is maximum of 1% improvement to an overall system.
My audio room is much better than that of my local audio store (very reputable, honest). Last year, the store gave a demonstration playing ca. $12,000 KEF speaker and ca. $10,000 mono block tube amps. Right after the demo, I listened to my system, no significant difference in terms of emotional feeling. Even my system played better, I thing, due to better room geometry (wider, bigger and higher).
I sold a tube phono stage (ca. $4,000, brand new price) to an AudioGon member last year. Why? Frankly speaking, I could not heat any significant difference between the phono stage and my vintage Onkyo P-304's phono stage.
My conclusion: Speaker and room condition matter most!

There are too many variables and the speaker is in part creates the most distortion vs digital or amplification. My $2kdenafrips Pontus R2R dac destroys Any blu ray or other digital products as far as a natural detailed balance ,
there is much better then that ,if you want to spend more, no crappy Blu-ray single bit $100 or $1k 
comes close that I know as the truth ,I owned the best Oppo205  Blu ray players 
and not even close in musical fidelity. If you are good with a $75  blu ray player 
that’s your business ,to me I expect much more then that,
land quality,cable types and power cords absolutely  help Taylor the preferred tonal balance you may be after .I owned a Audio store for 10 years and had $$
of toys to experiment with, and many esoteric mods that help a system further
everything counts .

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.