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 Gotham's state-of-the-art design and offer absolutely outstanding audio performance, nearly perfect signal transmission, and ultimate reliability. Both cable series deliver fabulous results, but the Premier line additionally offers features such as gold-plated connectors, a four-conductor star quad design for strong suppression of electromagnetic interference, and double shielding for increased suppression of high-frequency disturbances.