I agree with Newmanoc - a power cable is not going to resolve the issue of your digital front end sounding like "digital falseness". Don't neccessarily think you have to spend 3.5k+ (or 2k used) but you can definitely improve the smoothness of your front end. I'm extremely pleased with the tube based Musical Fidelity A5 but there are many options - also look at Cary and Resolution Audio.
FWIW, as far as cables are concerned, I even think an intereconnect change could bring more differences to sound than a power cable change.
FWIW, as far as cables are concerned, I even think an intereconnect change could bring more differences to sound than a power cable change.