I have one 15A, 1.8m Diamondback for sale. It is the original version.
I've used it on my McCormack RLD-1 Platinum preamp for the last year, but I only listen to CD now, and run the my Cary CD 303/300 directly into my McCormack DNA-125 Platinum "Plus" amplifier.
I have the newer version of the Diamondback on my CDP right now. I don't hear any difference between the two. Nevertheless, I'm discounting my cable because it is the older version.
Will sell for $110, which includes paypal fees and shipping.