with CD's data rate (16/44.1) , you still may hear an improvement with a master clock. But if I were shopping for a clock, I would sure look at the pro audio side first, before looking at consumer electronics. Take a look at Antelope Audio clocks. With higher data rates (24/96, 24/192) there is no comparison between no master clock and a master clock. The master clocked signal is so much better focused.