Serious HI FI enthusiasts would recommend that you change the standard 13amp -IEC Mains Cable, as the bare minimum when considering the mains supply side on individual system components. (eg CD player, Amplifier etc.)

This is because the standard mains lead usually supplied (similar to a kettle lead) is not very good at keeping out radiated interference and can act as an aerial, affecting your sound or picture quality.

Since you have invested a fortune in some serious kit, then the cost of this cable will probably be a small fraction of your total outlay, but the benefit may be substantial!

This cable uses multi layer screening to help provide protection against interference and is a valuable aid in the quest for product performance.