Why OCC? And what's OCC?
This section will cover the science background behind DHC's wire and why it matters.
It may be helpful to read this journal article first, while it does get a bit technical, it makes some interesting conclusions about OCC and high purity metals and the effects of these different qualities on the wire's performance.
The world of cables has many words and classifications to describe the wires and metals in use. There are a lot of different variables in place that decide what makes a high-performing wire. We hear everything from "high-purity" to "oxygen-free" to "7N" to "high conductivity". But instead of worrying about the other wire that's out there, let's focus for now on DHC's stranded OCC litz wire, Peptide.
The goal with DHC's wires are to offer the best wire physically, regardless of whether or not you believe in cables.
1. Metals purity. OCC process metals require a very high purity starting stock. The only true OCC wire begins with pure silver or pure copper. These metals are the most conductive, and avoiding contaminants and alloys maintains optimal conductivity.
2. Continuous casting process. Molten copper or silver is drawn slowly from the furnace into heated molds so that it cools from the inside out rather than the reverse, forcing it to crystalize into a single crystal up to 100 meters long. The theoretical benefit here is reduced resistance and capacitance from having a less disjointed crystal structure on a molecular level. Even after the material is drawn and annealed it has fewer crystal junctions than a conventional wire. Objectively this wire's structure is more consistent, so why not use OCC?
3. Cryo treatment. To make our cables physically stronger on a molecular level, this process in the very least improves durability.
4. Litz wire. All of DHC's retail cables have a thin, invisible enamel coating on each strand which prevents oxidation. This keeps the cables from degrading over time and maintains their appearance.
5. PE, cotton, and Teflon dielectrics. Flexible PE insulation is the best blend of performance and comfort for the majority of our cables. Our most advanced cables use a combination of dielectrics, such as the Complement4.