ypingping......
At their higher levels (red and black) they use "old new wire", meaning wire that was originally produced back in the 40's. As you can imagine, this is very rare, but is supposed to have properties that newer wire does not have. I'm no expert on the technical aspects of anything, but Danny Labrecque, who is a co-owner of Luna and the man who actually builds all of their cables can surely address any and all questions you might have. You can reach him at lunacables@gmail.com .