At Dyrholm Audio, we primarily develop cables through hearing tests. There have been many attempts to measure the differences between cables, and undoubtedly, these differences are measurable: the inductance and capacitance of different materials, and the differences in insulation materials. However—unfortunately—these measurements don't actually tell us anything about how a cable should be measured to sound "correct"! So, all cables have a certain degree of resistance, inductance, and capacitance, but there has never been any proven relationship between measured data and the actual sound of any cable. If this were true, it would be easy to manufacture a cable measured correctly, and the best cable ever made would be a reality. The key is: no measurement method or device can absolutely rival the human ear—therefore, Dyrholm Audio develops through hearing tests. We do care about scientific parameters, but they are provided entirely through listening, and the key is whether the sonic performance of our products is perfect. Therefore, our cables will not damage your equipment, like some braided speaker cables from decades ago that caused amplifier burnout due to an unfortunate combination of high inductance and capacitance. Therefore, at Dyrholm Audio, we spend hundreds of hours listening to the effects of different materials, knowing that every component in the cable impacts the overall result. This includes the quality of the conductor material (copper, silver, gold), the mating surfaces of the conductors; the purity, diameter, and number of conductors; and the isolation of the conductors, construction, and connectors used. When one or more of these components changes, the cable's performance also changes. Therefore, producing the perfect cable is a never-ending process. Our products are handcrafted in Denmark, from raw cable to finished product, from start to finish, to precise length. The core consists of pure POOCC copper, pure silver, silver-plated, or gold-plated copper. Because silver and copper wear down (oxidize) over time, all cables are contained in a sealed tube that shrinks upon heating, while simultaneously sealing the ends to prevent wire oxidation.