Originally Posted by Don Hills
Originally Posted by SilverEars
Hi, I recently had a discussion today with a headfier regarding cables for iems. A iem has a impedance graph that dips as low as 4ohms. He told me a cable can be up to 1ohm/foot impedance. That value is significant in relation to the impedance of the phone.
Does 1ohm/foot exist?
That's almost exactly the resistance of a strand of 40 AWG wire. I doubt anyone is using conductors that small. (A human hair is appoximately the same diameter as 40 to 44 AWG wire.)
well if it's only about impedance, it's pretty easy to lower it by use of 1/R= 1/R1+1/R2+1/R3.... by multiplying the braids (each insulated from the other, up to jack).
but it's bound to have consequences elsewhere (big stiff cable for iem might not be super fun). and the surface receiving EMI will be that much bigger too, etc.
@ lids369 did you create an account to avoid any risk of troll? sorry it's the first thought I had yesterday.
what about all the wire running inside your walls, outside to a pole, etc? how adding 2meters of something "possibly good" to hundreds of meters of the most basic electric copper wire, could make any kind of difference? I just can't see it. oh but they have the answer here http://www.gcaudio.com/resources/howtos/powercords.html . that article made me laugh tbh, did it really explain anything to you? it's stating random stuff, but I don't see any conclusive point telling us to do this instead of that. "EMI must be filtered", "or not". "the last part is the first part of the circuit", and is pretty much just a part so why does it matter? very strange article indeed. whatever need to filter the current, the amp manufacturer could do it, they don't wait for super power cord guy to come save them. this makes no sens. and then it talks about all the stuff that shouldn't be in a power cord, and use those to justify why sound could change... crazy way of thinking.
placebo I'm know and understand very well. you pay more attention, so you hear more details. that I also understand. people with 50k audio gears being reluctant to go with a 10$ power cord, I also understand, but that is about human behavior, not rational thinking or physical needs for the amp. if I'm a billionaire, will I go get a more expensive coca cola just because cheap stuff stands out? probably in front of my rich friends...
and the fact that the brand does some wiring for NASA, well it means they could do the wiring needed for NASA, how is that relevant for audio? I know some great brands that do ethernet cables, that doesn't convince me to go there to get my power cord. it's nice advertising, but that's it.
and even taking that strange idea of a power cord being meaningful for audio to the end. if adding a small length of good stuff before an amp could significantly improve an amp, don't you think that all amp manufacturers would roll 2meters of said cable inside the box of the amp? boom best audio trick ever! take that competition, I put the great power cord inside the box! ^_^
if going from one power cord to another had any significance, then wouldn't just getting rid of that extra length be the ultimate way to improve sound? just soldering the wires inside the power outlet to my amp should make wonders to improve my sound. and taking my amp to the power plant, I dare say it would be the ultimate experience. minimum EMI, premium grade electrons, what a treat.
I'm pretty sure that turning my lights off would physically have more impact on my amp than your power cord. I can think of zero reason why it could be anything but a scam. like most expensive cables.