deficences can be do to the actual mqastering involved, the quality of
the da and other such issues.
when cd first became commercial, many companies released their
catlogues using the LP master
with the RIAA curve intact and the players were outputting the audio
one sample out of time, L then R then L then R.

the quality of the playbck can be from inexpensive players. the issues
of reading and converting the digital to analogue can change the sound.

poor reading means error correction to replace misread data.
bad DA conversion and then the actual analogue out slurs the music.

and the inputs of the preamp and amp can be less then the audio being
sent to it.

the issue of 44.1 playback is an engineering concern.
just like those with the turntable.

buy cheap get less quality
the Linn turntable cost 10 grand, is belt driven and the tonearm is
manual
no auto set down and pick.
but it is a great sounding turntable

dale