Can upgraded power cords help my setup?

I make (and have sold) my own audio power cables. I usually buy materials thru Newark Electronics, MCM, Parts Express (which I used a lot). I get the Watt IEC connectors or hospital grade/similar and order the 10/12 gauge AC wire and snakeskin to make it pretty. Also Shrink tubing is a very good idea. Just solder, or use the screw in connectors to the plugs AFTER threading the snakeskin/shrink tubing (I do one side then thread the tubing/skin after). I test the plugs for shorts, then plug it in and test the AC power connection before bringing it near the equipment. Using a DVM of course. I think I was paying about $40 in parts, the plugs can be as expensive as you'd like. I have no idea why electricity running thru miles of crappy cabling and romex can be altered by a few feet of high grade AC wire/plus but it can be dramatic. I mainly used them for preamps and esp. power amps. I was a dealer for Mondial (RIP, thanks Klipsh), YBA, NAD, Myryad and a few others. I also have an Associates in Applie Electronics. Not saying this to be pretentious, just I have somewhat of a clue what's going on. Hope this helps. 

Just checking to see if you were reading the response.  Good on you for that.

@dlcockrum

Quote: BTW - add-on ferrite chokes not only kill the RF/EMI/digital hash (if they do) but also the sound. Try them and see.

What a load of hooey. So you’ll admit that the ferrite chokes will block/filter the harmful effects of RF and EMI but in doing so it makes a generic pc sound worse? Really? The chokes prevent your pc from becoming an antenna for any stray and spurious RF/EMI. And when those chokes perform exactly as they’re supposed to they somehow decrease the potential performance of any given pc? Puh-lese.

I wish I had your golden ears....

Try it and see, Mr Jones. This is also stated in the Shunyata paper on the Galen Carol links posted by corporatehippie.

The ferrite chokes are even (much) worse on interconnects.

Dave