Copper purity in normal cables and expensive audiophile cables?

[Antonmb]

Originally Posted by Puma Cat

There is no such thing as 99.99999% copper, this is just marketing-driven audio industry marketing hype.

Yup, anything more than 4 nines is meaningless hype. Here’s a good article on the subject:
http://audiophilereview.com/audiophi...le-design.html

[Canonicus]

Ok..I guess we can pooh-pooh "OCC" (Ohno Continuous Cast) and "Oxygen Free Copper"
as pure bull,too?

[JMD]

Different trade names for the same few grades of material.

[Formerly YB-2]

Originally Posted by Cohibaman

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.

Well said. Unfortunately for me (my bank account), I've been able to hear a difference. If you are not able to, take a nice trip (or whatever) with the extra funds.

[Antonmb]

Originally Posted by Canonicus

Ok..I guess we can pooh-pooh "OCC" (Ohno Continuous Cast) and "Oxygen Free Copper"
as pure bull,too?

I don’t think anyone said that, only that any claim to purity beyond 99.99 purity is suspect.

[PHC1]

Wish the recording qualities of much of the music was 99.9999% so we can really worry about such trivial things as copper purity.

[SCAudiophile]

Originally Posted by Antonmb

I don’t think anyone said that, only that any claim to purity beyond 99.99 purity is suspect.

My father was a metallurgist....specialty steel industry including high-tech (non-copper) wire, think extreme aerospace and medical applications. Purity beyond 99.99% has been able to be quantified/measured for quite a long time now. I know you are saying such claims are suspect (which can be very true!) and not that such purity is impossible however if a firm is responsible they can publish accurate specs that substantiate the claim.

[SCAudiophile]

Originally Posted by PHC1

Wish the recording qualities of much of the music was 99.9999% so we can really worry about such trivial things as copper purity.

Big +1 on this!

[Puma Cat]

Originally Posted by Canonicus

Ok..I guess we can pooh-pooh "OCC" (Ohno Continuous Cast) and "Oxygen Free Copper"
as pure bull,too?

No, that's not the case. The OFE specification includes a value for oxygen content and Ohno is a casting methodology, not a purity specification. They are completely different things.

[Puma Cat]

Originally Posted by JMD

Different trade names for the same few grades of material.

Respectfully, they are not. CDA-101 and CFE-101 are "reference standards" for copper purity. Reference standards, by definition, do not vary. This is so that manufacturers using these materials can obtain consistency and conformance to specification of the materials in question.