For this reason, a partnership was established with Gotham AG, based in Switzerland and 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 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 starquad construction for strong suppression of electromagnetic interference, and double shielding for enhanced suppression of high-frequency disturbances.