Callisto is made of the purest OCC copper. The cable is screened in Double Screening System along with a multi-wire braid (100% coverage), which protect the cable from the magnetic field. The new generation of the power cord from Ultra Reference series is equipped with new plugs AML-AC10-Rh. The conducting material of the plugs is pure copper plated with a non-magnetic layer of rhodium. A high quality housing has an anti-resonance system and provides excellent protection against external electromagnetic interference. The design of the housing made of non-magnetic elements (multilayer nonmagnetic stainless steel and carbon fiber shell) ensure clear and stable signal. Moreover, the conductive braid was redesigned and now contains five wires of 6mm². The cable is extraordinarily flexible despite its large diameter Moreover, Callisto received the antistatic coupler made of POM-C AP50 from Acoustic Points, which protects the surface of the cable from micro electrostatic charges. The coupler is mounted with a non-magnetic screw. The changes have initiated a significant redesign of the look and Callisto Ultra Reference M2 gained a new face and unique colour.