Good replies to your question. Sometimes in trying to understand the solution to a problem, like a better power cord can be...it is good to either understand or be aware of the problem. Of the many things that can be a concern with the AC power going into your components...the one that is easy to grasp is the idea of wire and RF. If a person wants to receive a distant FM station, it is best to put up a good antenna..., well, the huge amount of wire running through a home is much like a massive antenna for FM, AM, Ham, CB, ticks and pops from household electronics...let alone what is feed back onto the line from very powerfull motors on the furnace...and the list goes on. A line comming in...kept short for the stereo..is a great suggestion, one of the power plants, or the like is another good idea..and the power cord IS the last line of defense. I have had good luck with the high-end Nordost, but almost any upgrade is better than none. Best of success.
Power cords makes difference-Why?
I just discovered to my amazment that even power cords swap with the same high-end brand of equipment makes a difference. My story follows , I would like someone to shed more light on the phenomenon.( I know there exist power cords costing thousands, but never bought in to it.)Recently I added a surround sound preamp (Classe SSP-50) and multi channel amp(classe CAV-150)and center and surround speakers(Dunlavy SC-1 and SC-II'S). I have two channel system consisting of Classe CDP.5, Preamp CP-45,Amp CA-400 and Dunlavy SC V's as main speakers.The power cord on the SSP-50 has a little larger dia then the preamp CP-45. Last few weeks I thought I was using 'better' power cord with the CP-45. Everything else remained same for two channel(SSP-50 isolated) and the sound stage changed for worse.I was scraching my head frustrated thinking if any thing else I did could change my Audio nirvana. Then I recalled the powercord swap and quickly changed back to thier respective cords and wallah: My original sound was back.So my question: What constitutes a great power cord? Thanks for your advice in advance.