Really?Yes. Let me put it like this.
Programmer of a game put in a specific CONSTANT hex #13220 is a dark green of green-cyan. And in RGB color mode model #13220 is comprised of 0.39% red, 19.61% green and 12.55% blue.
So it is a constant variable that is in the software and it is not changing.
Take ten laptops install software that includes that constant.
Put all ten laptops side by side and you WILL have 10 DIFFERENT shades of green.
And as I explained why in the previous post, all of the laptops screens reproduce that constant slightly different.
That’s why there is a calibration devices that you suck onto the display and make a calibration of the screen.
The same goes for CD or any digital device there is a data constant number that is made sure that it always stays the same with error correction (matematics calculate checksums and so on to make sure of that.)
But after that what that constant data is leaving the CD transport and what is coming out of the speakers is ALMOST the same like with the monitor example above.
It stops to be a constant and for audio it is in the analog domain and you need to understand that there is no check sums and no control over that the information (the constant) is intact it is now a sliding scale..
You can build two identical amplifiers and when capacitors, resistors, inductors opamps and so on they are ALL individuals and different from one to another for the exact same component!
That is why they have tolerances. So if you have a tolerance of ±1% then it is at the most only for that component alone at most 2% variation between one and another part of the same capacitor for example.
That is why very serious amp builders measure and match each component in the signal path. Like you could pay someone to match and find two tubes that measure closer to each other than other ones in the same batch, to use in a amp tube. So in the analog domain everything is in a flux state..