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Old 11-20-2017, 01:01 AM
Mouse Mouse is offline
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Default Copper purity in normal cables and expensive audiophile cables?

What is the copper purity in normal cables and expensive audiophile cables?

I know Shunyata claims 99.99% pure copper, and Nordost claims 99.99999% pure copper. Seems like there is a wild of difference between purity here.

What does Audioquest have? How about the Blue Jeans cables like Canare and Belden?
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Old 11-20-2017, 08:16 AM
Mikado463 Mikado463 is offline
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Quote:
Originally Posted by Mouse View Post

I know Shunyata claims 99.99% pure copper, and Nordost claims 99.99999% pure copper. Seems like there is a wild of difference between purity here.
???? I wouldn't call that a 'wild difference'
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Old 11-20-2017, 09:57 AM
JMD JMD is offline
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That's called creative advertising not a "wild difference."
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Old 11-20-2017, 11:02 AM
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That's called creative advertising not a "wild difference."
Let's pretend for a second that this is drinking water. Percentage wise how much lead and arsenic will you tolerate out of the two percentages? Huge difference between 99.99 and 99.99999.

I don't know of any sonic difference between. 90%, 99%, 99.99, and 100%.

Shunyata advertises 99.99, yet belden has a cable that's 99.995 but it's hard to find.

In an air filter that tries to capture 100,000 dust particles: 99.99999 will release one dust particle whereas the 99.99 will release about a 1,000.

Care to contribute or shall we argue semantics instead?

Here is Shunyata's claim.
Quote:
Shunyata Research uses only the highest purity of copper available for the production of its wire products. **OFE Alloy 101 or **C10100 is the highest grade of copper with a minimum 99.99% purity and a conductivity rating of 101% IACS. OFE stands for oxygen-free electrolytic and supersedes the term OFHC (oxygen-free high conductivity). **C10100 is the only grade of copper that comes with a written certification of purity. Certified by ASTM F68 **C10100.
I'm not saying this is will sound bad, I actually have an order I'm waiting on from Shunyata that hasn't come in yet. But after reading around "4 nines" seems pretty common, but to justify that it's only the highest purity of copper available" I'm curious what's different about normal copper from any source.
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Old 11-20-2017, 11:56 AM
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What would you like us to contribute in these multiple "cable" threads other than to go back and forth about individual manufacturers advertising claims. That is why most of these threads end up closed.
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Old 11-20-2017, 12:45 PM
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If God himself gave you the “perfect” cable, you may not like it. It’s up to you to find one that you like. If they all sound the same to you, choose the cheapest one.
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Old 11-20-2017, 02:09 PM
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If God himself gave you the “perfect” cable, you may not like it. It’s up to you to find one that you like. If they all sound the same to you, choose the cheapest one.
Agree
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Old 11-20-2017, 02:16 PM
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Quote:
Originally Posted by Cohibaman View Post
If God himself gave you the “perfect” cable, you may not like it. It’s up to you to find one that you like. If they all sound the same to you, choose the cheapest one.
+1 on that!
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Old 11-20-2017, 03:22 PM
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Quote:
Originally Posted by Mouse View Post
What is the copper purity in normal cables and expensive audiophile cables?

I know Shunyata claims 99.99% pure copper, and Nordost claims 99.99999% pure copper. Seems like there is a wild of difference between purity here.

What does Audioquest have? How about the Blue Jeans cables like Canare and Belden?
There is no such thing as 99.99999% copper, this is just marketing-driven audio industry marketing hype. This specification is not used in the copper manufacturing materials industry because it doesn't exist.

The two meaningful purity specifications that are actually used in the copper manufacturing industry are CDA-101 copper and OFE Alloy 101 (or C10100), which is the highest grade of copper with a minimum 99.99% purity and a conductivity rating of 101% IACS.

Shunyata presently uses OFE Alloy 101 for a number of their products, as well as their Ar Ni alloy.

The reason Shunyata provides a specification of 99.99% purity is because they use OFE Alloy 101. They provide the 99.99% specification because they are a scientifically-based, data-driven company that doesn't subscribe to meaningless and non-existent specs hyped by the audio marketing industry.
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Last edited by Puma Cat; 11-20-2017 at 04:00 PM.
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Old 11-20-2017, 03:41 PM
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Fun facts about copper (I feel like Sheldon Cooper)...

https://www.copper.org/education/c-f...cts-print.html
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