Despite many upgrades to my system over the years, I have kept faith with my trusty Kimber 8TC/4TC biwire for what seems like eons. Simply put, compared with many others tried, including Kimber Select, Goetz, Townsend and Nordost, they gave me music;) Their combination of space, detail and smoothness was a very difficult act to follow. But finally they have been usurped......and from an unlikely source;) Firstly I discovered that I actually preferred the integration of single wiring my Merlins, using the Cardas jumper leads that Merlin sell. Quite a shock to me, always thought I should biwire. Then I switched out the Kimbers for the new beasts, the "response" speaker cable from of all people Proac:eek: Suddenly the Kimbers seem so limited, the Proacs expanding the soundstage, offering up more detail, and whack to spare. Plus by virtue of a delightfully balanced treble, they are just so musical:D So what is this "wonder design? Simply a couple of 2 guage high purity copper conductors suitably encased. Doesn't seem to be any snake oil here, just huge amounts of copper. The result for me is musical heaven. Only problem appears to be the possibility of tripping over the stuff and the spades failing to fit properly into the large WBT terminals on the amp;) One certainly worth checking out for the serious music lover, particularly if yoursystem has a slight edge or mild thiness in the midrange.