I'll assume that you've put IEC outlets on your TV's, coffee maker, microwave and electric shaver. Think of how better they will perform with a higher gauge, shielded cord.
It's really funny here. We have 2 camps. Camp 1 has horrible AC and must have a line conditioner to make the AC bearable. Camp 2 must love the AC and completely shields it. You guys are all genius.
As fun as your Camp 1 and Camp 2 remarks are you know as well as anyone that it is utterly stupid as well. Camp 1 is conditioning their AC which has merits that are undeniable. Do not believe me, turn on your microwaves and other strange things and scope the line, it has a lot of crap on it. Well you can hear it anyways often when you do not have dedicated lines anyhow. I can watch the lights dim in my house from all sorts of things. Camp 2 is trying to keep out all the things from other means of inductance than line as Camp 1 was doing. They have the same goals and most of the time go together for obvious reasons. Sounding self righteous is fun so I guess I understand why you maid the comment.
However I am not trying to tick you off. I usually think you are a good contribution to the forum.
I would like to point something out... While in some cases the regular patch cord or built in cord measure to be the relative same as any other aftermarket cord, other times they are made from crap. I imagine that the ability to "drive" so to speak a piece of equipment is similar to say driving a speaker with certain types of amplifiers. This is why capacitance, inductance, and resistance all play a role. We also know fluctuation of demand by a unit and the available current is important too. Also we know the given characteristics have a tendancy to change sometimes based on elements like heat, or sometimes not even a change with the cord itself in temperature but rather the component that the AC line is "driving" and there for changes the type of load on your AC line.
Lots of variables, is it really any kind of surprise a power cord could make a difference? Now I personally doubt it makes as big of a difference as some people believe on one hand. The reason I think that is I think any high quality and capable cord will always relatively act the same no matter where it is, speaker, line, RCA, etc.... so long as the regular parameters are decent or similar (inductance, capacitance and resistance) which is often the case in high quality copper. However on the other hand I believe a lot of manufactures make up a lot of ways to "improve" cables of any kind and actually change those parameters, or do other strange things to color or choke or act regular. You have to realize at some point one cable is doing a disfavor to you but do to your setup you like the way it sounds. It might choke stuff but it makes it sound more refined and better imaging etc, that sort of thing. I honestly think physics and empirical evidence provide a lot of information and to some level will explain almost all of it. That makes the big question, where do the big differences come from then, I theorize the cable makers do all that they can to color and taint stuff in different ways as possible so someone will think it sounds better even if it technically on paper is the opposite. It is subjective so you can serve them with "subjective" things so long as you tell them it is better and give some stupid reason.