Modern arc induction furnances are all oxygen free. There haven't been open arc furnaces used for decades now.
But, if you want to buy the label and mystic of dielectrics and the oxygen free label (you can say this if it is, and you DON'T have to say it if it is!) do this;
Buy Belden 1313A cable - 10 AWG stranded (259x34) high-conductivity bare copper conductors, PO insulation (this is the real good stuff). Strip the outer jacket off, its that terrible PVC!) and replace it with PE wire harness wrap. Crimp and solder Cardus spade lugs of your choice. Have a listen. It will cost you next to nothing to build a set one afternoon. Compare all those expensive cables to your darn near free reference before you buy.
I never parted with my bi-amp pair I made for my Quatro's. My frind still has them, too. They blew away his expensive cords.
But, if you want to buy the label and mystic of dielectrics and the oxygen free label (you can say this if it is, and you DON'T have to say it if it is!) do this;
Buy Belden 1313A cable - 10 AWG stranded (259x34) high-conductivity bare copper conductors, PO insulation (this is the real good stuff). Strip the outer jacket off, its that terrible PVC!) and replace it with PE wire harness wrap. Crimp and solder Cardus spade lugs of your choice. Have a listen. It will cost you next to nothing to build a set one afternoon. Compare all those expensive cables to your darn near free reference before you buy.
I never parted with my bi-amp pair I made for my Quatro's. My frind still has them, too. They blew away his expensive cords.