Purist Audio Design (PAD) is a top-tier American audiophile cable brand founded in 1986 by former NASA engineer Jim Aud. It is renowned for its proprietary "Fluid/Ferox/Contego" technology, which effectively eliminates mechanical vibrations and electromagnetic interference. PAD cables are handcrafted in the USA, emphasizing musicality, fullness, and listenability, and using physical properties to enhance signal transmission purity. It is widely recognized as a high-level cable brand in the Hi-End audio industry.