There are two pairs for sale that were used in a bi-amp system. These cables are from the mxt series which are a mix of copper, silver and gold. Cables are about five months old and fully broken in. These have the removable s-conn step spades on both ends where the speaker end was opened up to fit the extra large binding post of the Wilson Benesch Arcs. See pics for desciption. Price is for one pair and a discount will apply if both pairs are purchased together.