For this reason, a partnership was established with the Switzerland-based Gotham AG – 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 leverage 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 features 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.