I would wholeheartedly agree with Danlib1's assessment of DCCA products. I also own a number of DCCA pc's and one pair of IC's. l have had the opportunity to own a pair of Don's speaker cables for about one year. Previously I had owned Audioquest Dragon 2, Synergistic Designer Reference and others as well. I had auditioned Purist Aqueous Anniversary and Opus. I then tried the DCCA speaker cables and found them to be the best of them all. Of course everything is system dependent so your mileage may vary here.
It has been my listening experience that the DCCA speaker cables produced excellent sound reproduction across the complete audible spectrum. The bass was solid and tight, the mids were open and airy and the highs were detailed but not bright.
I have a pair of Magnepan Tympani 4a's that have a 6' ribbon tweeter that can be problematic (harsh sounding) with the wrong cables and the DCCA's really have had the ability to tame that problem.
Another thing that I might mention is that Don is a joy to work with. You would be hard pressed to find a manufacturer who is so responsive to his customers needs. This IMO is a real selling point when considering DCCA products.
I hope my input has been of some use to you. Please contact me if you would like more feedback.