"Wow, de-magnetizing a non-magnetic metal. How, exactly, does that work?"
08-08-13: Rlwainwright
Yes, aluminum can have impurities in it.
The ink in the label more likely especially dark colors like black, red, and brown.
Here are a couple of Links on the subject.
http://www.iar-80.com/page53.html
http://www.6moons.com/audioreviews/furutech/rd1.html
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