Purist Audio Design's extensive research and testing gets down to the heart and soul of a product. At this most basic, yet extremely crucial, level is the raw materials. The first key is the choice of precious metals and alloys to be used for the conductors. We look at not only capacitance, inductance, and resistance, but also magnetic fields. That is why we use alloys for our conductors, rather than simple copper or silver alone for the ultimate in sonic quality and performance.