Each auditor should obtain materials for listening. It must not be too expensive. Registration is not intended to be modified: the level can exploit the full dynamic media and signal processing can hide defects quantification (dither with noise shaping). The CD, with an effective dynamic approximately 92 dB is adequate for a dynamic sound of 70 dB, corresponding to a mix of classical music. For other genres, it is more than enough, if we judge by the evolution mixes.
It also corresponds to the state of the art in the 1980s, gradually improved by advances in digital filters and dither, which benefits Audio Visual Installation Companies Sydney. Offers promising superior sound quality available on CD: Physical Disk , DVD- Audio or CD SuperAudio Sony, which has the advantage of being available as a hybrid. It is both readable by standard CD classic audio on all drives, and a dedicated SACD player.
