PC-Triple C, 102SSC and D.U.C.C. are three different ways of making and controlling copper, not three purity percentages you can rank. The useful comparison is the process behind each name and the complete cable built around it.
102SSC: Oyaide's precision copper
Oyaide starts with virgin copper and removes the surface by machine peeling before carefully controlled drawing and annealing. The aim is a clean, consistent conductor rather than a higher number on a purity badge. Oyaide specifies 102.3% IACS conductivity for the 102SSC used in cables such as EXPLORER V2.
The conductor name does not describe the whole cable. Some Oyaide designs add 3E stranding, which uses three strand diameters for a denser lay, while others use completely different geometries and shields. It is worth separating those specifications instead of treating every 102SSC cable as electrically and mechanically identical.
The TUNAMI NIGO V2 power cable is a clear example. It starts at $249 and combines 5.5sq 102SSC conductors with three shielding layers, a drain wire and a 14mm jacket. Its 600V and 30A cable rating, shielding and bulk are just as important to its application as the copper process.
PC-Triple C: forging before drawing
PC-Triple C begins with a different manufacturing idea. The copper is repeatedly forged at a fixed angle and direction, then drawn and annealed under controlled conditions. SAEC describes this as aligning and extending the crystal structure along the conductor while closing microscopic voids.
That is not the same claim as simply making copper purer. The process is concerned with the metal's internal structure. It is also not a promise that a cable will suit every system, because conductor area, insulation, geometry and termination still sit between the copper and the equipment.
The SAEC AC-6000 starts at $250 and uses three 3.6sq PC-Triple C cores with cotton filler and a copper foil shield. SAEC identifies it as the first audio power cable to use PC-Triple C. Kripton uses the same conductor family in a different way, including speaker designs that add their own mechanical damping structures.
D.U.C.C.: Mitsubishi's controlled-crystal copper
D.U.C.C. stands for Dia Ultra Crystallized Copper and comes from Mitsubishi Materials. Its production tightly controls purity and crystal growth to produce a uniform, highly ordered copper conductor. It is a distinct material and process, not another name for 102SSC or PC-Triple C.
Furutech uses it alongside alpha-OCC in the DPS-4.1 power cable, which starts at $516. That build is an 11AWG hybrid with a nano-ceramic and carbon damping sheath and a substantial 17mm diameter. Calling it merely a D.U.C.C. cable would miss the OCC part of the conductor and the mechanical design around it.
This is why brand attribution matters. D.U.C.C. is Mitsubishi's material, used here by Furutech. PC-Triple C appears across SAEC and Kripton products. 102SSC is Oyaide's precision conductor. Similar marketing language about crystals does not make the three interchangeable.
How to use the copper story when buying
Start with resistance before romance. For a given conductor material, a longer or thinner cable has more resistance, so gauge and run length remain basic buying decisions. In interconnects and digital leads, geometry, capacitance, impedance and shielding can matter just as much. In mains and speaker cables, connector fit and conductor area should not be skipped because the copper has an impressive name.
I would not rank the three processes as best, middle and budget. I would compare complete products at the required length, with the right connectors and a price that makes sense against the equipment. Listening impressions belong to that complete cable and system, not to a metallurgy label on its own.
The linked examples are current list starting prices, with length and connector choices added as applicable. You can compare them in the power cables range, or tell me what you are connecting through the custom order form and I will narrow it down by application before copper brand.