A good power cord can make a huge difference, but many will add different sonic characteristics to a component. If your system is a bit bright, I would avoid cables composed of silver wiring because they will make it sound even brighter. Some PC's are neutral, some are warm. I have used Nordost Shiva & Vishnu, Virtual Dynamics NiteII, Electraglide Synapsis 1, Elrod EPS 2 and am now using Cardas Golden Reference. While all of these are very good cables, they also displayed different sound characteristics to the components they were attached to. I found the Cardas to be the best for my system. I have to say that I did not have a way to audition any of these, so I purchased many on press reviews and forums. If you can audition, you can avoid the buying and selling that I have endured until I finally found a cable that I can keep for a while. :>) I would also encourage you to avoid buying any cables at retail, just too expensive. Whatever you decide, you will probably be able to find it here on Audiogon. Good Luck!!
Are upgraded power cables really worth the money?
My system consists of musical fidelity a5 integraded and cd player, b&w 703 and a rel 305 sub. I'm Im using purist audio musaeus interconects and speaker cables. I understand and can certainly see how these cables have helped my system, but am a bit aprehensive about investing in upgraded mains cables. Do they really make much difference? With the system I have what would be the right amount to spend on them. Any suggestions?