Hello André,
Glad to see you here too.
I have tried few usb cables, Blue heaven nordost, locus nucleous, sauron chord and gemini iFi.
What i can say is, some cables looks they don't matched with my system a Mac mini early 2009, and a MSB diamond dacIV.
Thinking about this, i concluded in the usb cable the most important is the impedance match, using a usb isolator like iFi now i can try any cable between mac and isolator.
Till now i'm using nordost blue heaven from mac to isolator and gemini from isolator to dac.
I'll try this total dac usb cable, a friend brought this cable and he is loving it.
[]s
http://www.magisaudio.com