This one is an interesting article by AES, featuring considerations about the interface, jitter and other interesting topics.

In a correctly functioning digital audio system the only observable signal impairments should be attributable to band-limitation and an additive noise residue. Thus although the subjective sound quality of digital audio has received some criticism since the launch of the compact  disk (CD) medium 10 years ago, there can be little doubt that the theoretical performance obtainable from the 16 bit linear PCM format sampled at 44.1 kHz is superb compared to any analog source available to the customer

Is the AES/EBU / SPDIF Digital Audio Interface Flawed? – >>>LINK<<<