Why Expensive power Cables when Romex behind Wall?

Florida is not to kind weatherwise either, sounds just like yours. Maybe FL Power had to change his transformer too and it drove him out? Who knows? The guy drove me nuts for 6 months, but anything I know about hospital grade wiring, I know from him. He even went in and red chalked the slab with notes to the drywallers where he wanted the drywall glued and not screwed. He drove my electricians crazy too, but they made a mint off of him. He was paying the installers all kinds of money for "electrical favors". At first I was charging him when I saw things I wasn't making a markup on, but there came a point I gave up as my electricians charged me only the bid amount. Just one question though, being as that you went to such extremes to make your supply the best it could be; wouldn't a power plant of ample size been a better move? So that no matter what transformer you ended up with, voltage drops, spikes, etc, the power was cleaned and constant?

Psychicanimal - Just because a cord makes a difference does not mean that the last 6 feet is somehow magical. It still has to do with the inductance of the entire run to the panel. The last 6 feet reduces the overall resistance and inductance compared to a typical "rubber" cord. Cryoed cables can perform well because they are lower resistance.

I make cords myself and you can see all of the measurements, analysis and theory on my website:
http://www.empiricalaudio.com

I may be naive and this may garner some 'flames' but ... I've got to believe that the main impact of upgrading a PC is not to do with the cable but more the CONNECTION. Hello ? There are two of them. One to wall recepticle, and one to the equipment, if I understand correctly. My guess is that if you simply unplug and replug an existing PC you'll end up with a better connection and hence, hopefully, improved sound. Cleaning these connections would help to.

Freezing them (I'm in Tahoe) - does this help ? Bummer that it only gets down to -20c here in winter and the better half would be distinctly uphappy if I opened the windows and shut down the stove to improve the sound ;-)

No flames--I read a post in the Asylum by Jon Risch where he says he suspects 50% of the sound in power cords is due to proper grip...

For fun, do a little experiment, buy an inexpensive steel or brass outlet cover and install it in place of your plastic outlet covers. Plug in your system and listen.

You should notice a big change in sound.

WHY?

I will spit this out for discussion.

We cannot cure world hunger & explain every improvement we hear in audio as a direct result of decreasing capacitance and inductance while ensuring a low dielectric absorption. While this is important and the common angle to view how cables effect a system it is but a small piece of the puzzle.

Since everything resonates at certain frequencies, the wire (yes, the stuff inside our walls interconnects, and power cables) will resonate too. This is called (drum roll please...) Mechanical resonance. Mechanical resonance is particularly evident when energy is applied to something. Bang that drum again.... did you hear something?

While inductance and capacitance are very important in cable design and lets not forget dielectric.... Mechanical resonance is to a great degree what we hear when we hear differences in cables (and components). With power applied to the cable, it will resonate and thus emphasize certain frequencies, audibly changing the tonal quality you hear.

Cable geometry, and material used are key in producing neato sounding cables since they can effect the frequencies which resonate and those that don't. Different conductors will all resonate differently. For example: Copper resonates at 26.530MHz, Gold at 1.729MHz, Silver at 4.046MHz, and Platinum at 21.499MHz

The effects of the resonance of the material depends on the gauge of the wire and of course whether or not it is in contact with a sound deadening substance like Teflon - rubber - Shunyata Sand ... Virtual Dynamics Iron Powder or whatever. These substrates weight down the resonance to create the sonic signature.

Make sense?

Okay how about saying it like this:

Power coming into your house is already resonating - when you plug your cool aftermarket power cord into the wall, how do you think this could effect the sound? If the cable changes the existing mechanical resonance, it will change the way your system sounds.

So when you change your electrical outlet cover to a brass or steel cover and plug in your hefty power cord, you will hear a new mechanical resonance in your system and better understand as the topic of this thread reads -- WHY EXPENSIVE CABLES WHEN ROMEX BEHIND WALL... :)