In my main system im running tributaries for interconnects & home brew speaker wires,your local Mac dealer should cary tributaries cables.
FYI you wont find alot of people on this forum who use or believe in botique or high end cables,including myself,as long as your running a quality cable one brand is just as good as the next,the good thing about Tributaries cables is that they are made like high end cables at the price of cheap monster cable.