Upgrading

@clearthinker Thank you for the correction. I mixed up a word in the response which made a big difference in interpretation. I meant to say “Agree with those” not “Agree with most”. My suggestion still stands, as quality of power delivery is the foundation of any system. Crappy power in is crappy sound out. I’m at a stage now where changing out power cords make bigger differences than the other cables, so go figure. 

+1 ghdprentice for letting us know what is in your system. 

Agree with most that power cords is where I’d start, but it depends on the quality of the components. If your components use quality power supplies and your line isn’t that dirty (or you are using a quality power conditioner or regenerator) then power cables are the best investment. Otherwise, speaker or interconnects would be where I would focus.