Silver and Ultra Blue speaker cables – “..this cable seems to be able to justify its price with an air of quality to the sound which is often missing, even when spending considerably more..”

Black Diamond and Blue USB cables – “The Blue offers particularly good sound-per-pound, but if you want the ultimate in performance then it is worth spending the extra cash for the Black Diamond. It is simply the best USB cable that I have ever heard.”

“If you have a decent DAC, this should prove a genuinely worthwhile upgrade, and thus represents fine value for money…”