Is this a pair of 20ft cables or a single?
Not familiar with the HiDiamond brand. How would these compare
to KimberKable 12TC and Synergistic Research Core Active and Element Copper?
Listing is for a pair of 20ft cables. Sorry, I'll make it more clear in the ad. There are reviews on the internet and a pretty good thread on the Audiogon forum that can help describe the HiDiamond sound. I think they have superb resolution, present a wide sound-stage, and just makes the music sound more there and live. I haven't tried the 12TC or SR's so I can't comment on that, sorry.