Cardas Audio Iridium Interconnect Combining a star quad arrangement with our proven golden ratio copper conductors, Iridium achieves the perfect balance of detail and warmth. Natural treble is blended with a smooth midrange and quick bass response for a very musical interconnect.Standard Terminations: Cardas GRMO or Neutrik XLR. Design/Construction: Conductors: Grade 1, 99.9999% pure OFHC copper with SPN clear coat (Litz), gauge sizes scaled to Golden Ratio proportions. Cross-field layer geometry, insulated in a FEP jacket. Geometry: Shielded Star-Quad 4 conductor bound together in PTFE tape. Hybrid shield combines a spiral of tin plated copper and a carbon impregnated PTFE tape.Finished in an ultra soft and flexible extruded TPR jacket. Gauge: 4x24.5 AWGOutside Diameter: 0.300”/ 7.62mm