What is PC Triple C
Ok, since you asked:
Japanese PC Triple C copper is made in Japan’s Furukawa plant and is the next-generation version of the Japanese Ohno (Continuous Crystal) copper (a.k.a., Ohno continuous Cast Copper - OCC). Furutech’s PC Triple C stands for Pure Copper Continuous Crystal Construction.
After the "Continuous Crystal Construction" process is complete, further processing by the "Transfer Forging Method" produces thinner gauges of wire. The forging process dramatically improves conductor density by removing oxygen, which improves the conductivity of the copper. A lengthy temperature and time controlled annealing process is then carried out according to the thickness of the wire, causing the crystals to fuse with each other, creating an even more linear crystal structure.
Annealed copper became the international standard to which all other electrical conductors are compared and, in 1913, the International Annealed Copper Standard designated commercially pure annealed copper to have conductivity of 100% IACS. Electrolytic-tough pitch (ETP) copper (ASTM C11040) is the main grade of copper used for electrical applications and is at least 99.90% pure with electrical conductivity of 101% IACS. Oxygen-free copper (OFC - ASTM C10100) is about 1% more conductive and achieves a minimum of 101% IACS.
When asked what the deal was with PC OCC copper, one industry professional replied,
One word: Marketing. Same as with OFC years earlier.
The issue is not whether there are differences in the wire, but whether those differences are reliably audible...which is for another thread.