Top acoustic cable from the American company Synergistic Research. 100% original. Serial number 061119127. Bi-wiring cable 2.5 m long. The company uses polarization of dielectrics in its cables. In Synergistic Research cables, voltage from an external source, applied to the screen, polarizes the dielectric, optimizing its properties. First of all, protection against radio interference is announced, namely, they, as is known, can adversely affect the timbre balance and saturation of the sound. “Active Shielded” (Active Isolation) is the possibility of “forced” (in one direction) polarization of the dielectric of the insulating layer. The cable is equipped with a power supply. It provides excellent sound and processing of the scene. Macro and microdynamics are at a high level. The cable is in excellent condition.