I finally broke down and upgraded the power cords in my system and wow I never thought it would make that much difference. Seems to improve the detail, imaging, "blacker" background. I have a SignalCable "magic power" on my integrated amp, AudioQuest NG1 on my cd/dvd player. The cable on my integraded definitely made a bigger impact than the cd/dvd.
Anyone else using after-market power cords? What components? Worthwhile upgrade?