Limited experience a few years ago auditioning their "32 series". I remember them as good and neutral. In particular, they beat the bi-wire B&W CDC16 /Kimber Select KS1010 /Audioplan S - combo I was using at that time when it came to building a nicely detailed, deep soundstage. However, for that you needed the quite expensive full "32" loom. In the end, I considered them too expensive (but hey, that notion seems to have lost a lot of its meaning related to cables and cords since then). A typical case of auditioning first, I would think.
http://silent-wire.de/english/en_index.html
http://silent-wire.de/english/en_index.html