It is conceivable that the sonics of your system may be affected by digital noise that originates within the CD player, which is fed back into its power cord, resulting in RFI (radio frequency interference) radiating FROM the power cord to susceptible points elsewhere in the system. The extent to which that may be an issue will, of course, be dependent on the particular system, including its physical arrangement.
Use of an upgraded power cord that provides shielding could help that, if in fact it is an issue in your particular system. That does not necessarily mean, though, that the power cord has to cost a lot. For example, Signal Cable's Digital Reference Power Cord, which I use on my CDP (together with a BrickWall), provides a braided + foil double shield.
Regards,
-- Al
Use of an upgraded power cord that provides shielding could help that, if in fact it is an issue in your particular system. That does not necessarily mean, though, that the power cord has to cost a lot. For example, Signal Cable's Digital Reference Power Cord, which I use on my CDP (together with a BrickWall), provides a braided + foil double shield.
Regards,
-- Al