If ones wants to almost mimic vinyl using cd, just put a 1kohm resistor across left and right channels of the cd/dac output.
This ruins the channel separation from 120db, down to about 30db right across the board (should be worse in the highs and especially the bass) but it’s a one resistor exercise.
What you’ll find is now playing a CD especially the old nasty left/right ping pong ones (early Beatles etc) suddenly they sound more fleshed out because you are "monoizing" them for want of a better word The voice instead of just in one channel are now in both which gives it extra body.
It would be even closer to vinyl if you were to really develop a proper passive network on the output of the cd, to follow a vinyl cartridge’s channel separation from 20hz to 20khz .
Cheers George