DAC measurements explained?

I just want to mention.. digital streams are NOT simple ones and zeros! The information stored on a CD is very complex. it is in groups of ones and zeros, packets, cut up and resorted! not individual.. The way the code is Laid down on the CD, and pulled off and arranged is way beyond complex. Error correcting too. One reason all CD readers, and CD decoding ,DAC can be very different.

Correct, but the reading is the change from pit to surface. each change is noted, the pits can be various lengths, yes it is analog, also the timing is critical.. since each pit and land DISTANCE matters time wise.. Every reader can be different in the quality of the stream it recovers..If you think there is no difference between a really cheap one and an uber high quality one.. I guess you only know the low fi Universe.

Sorry astel... Even digital program CDs and DVD use CORRECTION stuff in the files... so no, the read off CD program software is not bit perfect 99.999999999999 either. They use similar interleaving and error correction as music CDs and DVDs.THere can actually be a lot of errors in the disc read and the automatic correction sort out the errors. Using the same sort of interleaved packet based reading, with the same different length pits and lands..