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Best Conductor Materials by Frequency

Someone who's selling an interconnect sent me the following statement about which cable conductors are best by frequency range.

I quote:

"Copper is best from 1 to 1,000 Hz
Gold is best from 700 to 1,800 Hz
Silver is best from 1,500 to 14,000 Hz
Rubidium 4 Micron on silver best from 10,000 to 100,000 Hz

These are result of years of test and experiment at Stanford University on best conductor for transferring sound and live music. Result is very linear response for master recording."

Has anyone heard anything about this? Does it make any sense?
smeyers
joeylawn36111
574 posts
 
Wait a minute. Rubidium is highly reactive and Never occurs in nature unoxidized. Even 4 Microns on silver would be rubidium oxide, which becomes rubidium hydroxide, which is very soluble in water.
trelja
3,223 posts
 
Personally, I think this whole topic is BS. As those of us in this niche of the hobby tend to be more on the subjectivist side, if anything like this study existed, we would have most probably been hit over the head with it so many times that we'd all be parroting it.

As a former material scientist/chemist, I think he is probably mistaking rubidium for either rhodium or ruthenium, both of which are among the 8 precious metals. It makes little sense to plate a precious metal (silver) with a non-precious one (rubidium), but commonplace to plate non-precious metals (copper, nickel, etc.) with precious metals (silver, gold, rhodium...).
sherod
1,690 posts
 
Please don't mention Rhodium. It makes my teeth hurt just thinking about its sound. (O:
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