These cables were authenticated by Audioquest. If you need the RMA number to verify I can provide it. I blurred out my personal information in the first image but you can see my city and zip code as well as the date. Received back today from Audioquest. Incredible cables some of the best sounding ever made. Audioquest K2 12 foot speaker wire pair. Single ended cables on both ends. Solid Perfect Surface Silver. 144V DBS packs (2-72VDBS packs on each). Comes with spade connectors. These cables can be changed to bananas, Audioquest sells their ends separately, the K2 uses the 1000 series connectors. These cables are in very good condition. There are few snags on the cables but very small. The spades show normal wear. See my feedback and buy with confidence. Paypal please add 3%. Shipping is to the contiguous 48 states.