One last interesting note before we veer off topic too much:
Taken from the Cardas Audio website:
http://www.cardas.com/content.php?area=faqs&content_id=6&pagestring=Cable+Materials
"Silver Plated, Copper Conductors
Q.) First off, I like your cables very much, and use them in my system. After reading about various manufacturers using silver-plated copper in their interconnect and speaker cable designs, I was just curious what it is about copper that you like so much that you prefer using it over silverplate.
A.) Well basically it sounds better. Cables are a dynamic system, prone to ring. Like any other system without a little loss they will resonate, like a speaker box with no stuffing inside or phono cartridge with no damper. Ultra pure copper is ideal for audio purposes in most designs.
Plated conductors are inherently impure mediums with bi-metal junctions and are not suitable for audio use in my estimation. - George"