As far as clock jitter goes I just modified my Shanlind cd player with an Audiocom clock & Audiocom power supply. Also put in some new Harris diodes, Black Gate caps, & Vishay resistors and I can tell for for a fact that from the first cd play after installing the new components the sound quality is tremendously better and it is getting even better with some burn in.

Just my listening opinion nothing scientific and if it didnt sound better or was even a mild improvement I would say so.