Virtual Dynamics Nite II Power Cord improved the performance (resolution, extension soundstage width and bass heft, albiet a slight dryness in the mids) of my Wadia 301 CD player. As for my Rowland 201's, I currently prefer the stock cord supplied with the amps compared to 2 x PS Audio Lab II feeding the amps direct from the mains wall outlet. I also prefered the 201's stock cords when using the combination of two Lab II cables from a PS Audio High Current Ultimate Outlet and Xstream Statement Power Cord from the wall. PS Audio combinations did lower noise level and increase bass weight but sacrificed a slight reduction in dynamics and high freq extension.
Because there are so many things that can influence the sound of your system your best bet is try cables at home.
Because there are so many things that can influence the sound of your system your best bet is try cables at home.