I've made half a dozen detachable power cords from the 14-gauge Home Depot extension cord (so-called 'HD-14') first praised in The Absolute Sound several months ago. I don't know why anyone would choose a lower gauge. I like the HD-14s better than the other aftermarket PCs I was using (mostly Omega Mikro and Mapleshade) and have had some pairs cryoed for additional (marginal) improvement. I use Shurter IECs and several kinds of AC plugs. The main thing to remember is that these things are VERY directional. Take the time to make two pairs -- with the embossed legend heading both directions -- and try them both in each link. Your ears will tell you which one works best. And no, I'm not kidding. Good luck, Dave