For this reason, a partnership has been 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 achieved have exceeded all expectations. Two product lines have emerged – Premier and Professional. Both leverage the advantages of Gotham's state-of-the-art construction and offer absolutely outstanding audio performance, nearly perfect signal transmission, and ultimate reliability. Both cable series deliver fabulous results, but the Premier line also offers additional features such as gold-plated connectors, a four-conductor star-quad construction for strong suppression of electromagnetic interference, and double shielding for enhanced suppression of high-frequency disturbances.