Custom Cardas GR∀EDIGGER for Abyss AB-1266 Phi TC Headphones
Cardas GR∀EDIGGER copper is made in the USA in a proprietary method. The copper is slow drawn using diamond dies then it is run through an annealing oven to burn off additional impurities. The machines used are custom made for this application and an SPN coating is applied to prevent aging and oxidation. Purity is 99.9999% or better.