Agreed with above posts. I would add that power-hungry equipment (i.e. with high power consumption) can often seem to benefit more; and also check whether your own equipment includes any internal RF or other mains filtering devices. I f it doesn't, that's where to aim your aftermarket leads. Change one thing at a time. In my experience of using Kimber and Nordost mains leads, I would observe that CD players and power amps benefited the most.
power cord replacement...source or amp first?
is there a general rule of thumb as to where an aftermarket will make the biggest sonic difference? i have one (ps audio) that i have been using with my simaudio i-5 integrated, but i just moved it to my arcam cd player. i have another one (signal magicpower) on order, but wonder if there's a general rule of thumb as to priority when replacing power cords. source or amp first? thanks.