Are all copper cables virtually oxygen free?

All copper cables become oxygen free when they stop breathing. Hooking them up to a cable burner helps speed up this process as it effectively "electrocutes" them. For reasons of being politically correct and due to having too many threats from the ACLU, we've all agreed to refer to this as "cable cooking" or "cable burning" rather than "cable electrocution" or "conductor killing". Hope this helps clear things up : ) Sean
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LOL, Sean... A breath-taking clarification of the complex conducting process!

Hello

Some are QF 9.9999999(Quality Free)too!The factor is listen to music,not cable.

Regards

I will give you another theory why cables sound differently.(I know this does not really answer the question, if all copper cables are virtually oxygen free, but I think the main reason behind this question was to find out, if impurities make a sonic difference in copper audio cables)According to Dr. Strassner, the founder of HMS audio cables ,it is not so much the amount of oxygen which degrades the sound in copper cables, but the amount of so-called ferro magnetic particles. According to him, he is one of the very few cable companies (probably the only one) who have their wire material checked for the amount of ferro magnetic particles, since this test is very expensive. He will reject any copper raw material with more than 6 ppm of ferro magnatic particles.
The ferro magnetic particles will align and re-align according the phase of the current and use up energy. And energy loss in a auduio cable always translates into sonic loss of the sound quality.
That is one reason why sometimes audiophiles cannot agree on the sonic performance of the same cable brand. Well, now it easy to see why.
If the manufacturer does not care and does not know the amount of ferro magnetic particles, one batch of copper wire can be fine and another batch bought month later, used to manufacture the same brand of cables, can have a far too high level and thus the cables made from this inferior copper raw material will be of lower sonical quality of course.

So if I may summarize, the only good cable is a dead cable. By definition, they are all oxygen free ;-)

Seriously, it does appear that the OFC dynamic may not be real critical. However, the other imperfections are a problem. Tekunda mentions ferro magnetic particles. Any other issues?

Famaraca, you are absolutely correct -- listening is the best test. I like to put things within context though and would like some general info that allows me to make quicker choices about things in the future to narrow down the options. Personal approach. I appreciate all the comments. Please keep 'em coming.