For this reason, a partnership was established with Gotham AG, based in Switzerland – Europe's leading manufacturer of premium cables – to develop proprietary audio cables for the entire portfolio. The results now available have exceeded all expectations. Two product lines have emerged – Premier and Professional. Both utilize the advantages of cutting-edge Gotham construction and offer absolutely outstanding audio performance, near-perfect signal transmission, and ultimate reliability. Both cable series deliver fabulous results, but the Premier line also includes additional features such as gold-plated connectors, a four-conductor star-quad construction for strong suppression of electromagnetic interference, and dual shielding for enhanced suppression of high-frequency disturbances.