Do powercords make a difference in sound?

There is no mathematical equation to follow for good sound, but there is a lot of relevant science that can help....a lot!

Well said Al. Why have a discussion forum if we just share our experiences without questions?

Tbg, I'm in tech field and my experiences are very different than yours regarding to experiments. If my products fail, it's a matter of life and death. I guess in your world, it's just a failing grade.

Almarg and Knghifi, I appreciate that you have kept this civil. I am all for sharing personal experiences, but I view them as anecdotal or the weakest form of assessment. But it has some value. If many say the same thing, it has credibility for me. I might have questions.

What I don't like is people saying that this violates the laws of physics or that this is just a scam. We don't know all the laws of physics and certainly quantum physics has taught us to have difficulty understanding some things.

So I am merely saying that it is largely a buyer's decision. It is entirely appropriate to encourage that they hear both speakers in the same environment.

As to what the value of forums, I am somewhat uncertain. I wax and wain in terms of monitoring them. Seldom do I read anything that intrigues me or where I think I can help. Most of these are like audiophile meetings where the topic is always, "mine is bigger than yours." Don't expect agreement on anything in these forums.

11-20-12: Almarg
why are we all here? Most fundamentally, as I see it, and as I believe most of us see it, we are here to share information, ideas, and experiences, which hopefully will be mutually beneficial as we try to guide our investments of time and money in directions that stand the greatest chance of being rewarding.

That is what it is all about. Almarg with his background, is always helping people match up components, and helping them diagnose a problem. A lot of us (myself included), learn a lot more from his posts.

He has enough knowledge to make a statement about the use various accessories, and other things that may influence the sound of a system.

I myself still have not seen any test results of any kind, that shows they work. Manufacturers of audio amps, and all kinds of other components, have to prove what their equipment can do. Not so with these types of tweaks.

Also, the tests, and science used to make audio gear, has way more consistent results, than human observation does. Eyewitness testimony is a good example of human err.

Hifitime, I will just say that I have had too many experiences with audio that belie that our measures, tests, and physical laws cannot explain obvious improvements in audio reproduction. I will mention only a few. The Zilplex room treatments, a set of eleven 1/2" solid silver cups on plexiglass mounts and positioned around room, make the walls disappear. The StillPoints Ultra Five isolation feed just make other isolation laughable. The Urushi caps using a very inexpensive cap and wrapped in cotton twine and treated with urushi lacquer greatly outperform teflon caps costing twenty times as much. I have been in many demonstrations as well as having much personal experiences with all of these. Perhaps there are some measures that might be used in each case to prove my point, but why bother?

Each of these has many competing devices. Why don't all others close shop? In the case of the StillPoints, I know the basis of their "technology," for the Urushi caps, I suspect that vibrations are a key element, but why the use of the urushi lacquer? For the Zilplex treatments, I have no idea save the possibility that they are very small Tibetan bowls. Very much of audio design is trail and error, validated by what we hear, and we don't all hear the same.