Monster M Series MCX-2s MLock Master Pin Speaker Cable (15 ft. pair) (Discontinued by Manufacturer) Advanced compact design - ideal for audiophile systems, home theater, and remote speakers. Separate bass and high frequency networks for greater clarity and increased dynamic range. PEX dielectric for improved reproduction of harmonic structure and inner detail. MultiTwist construction for lower noise floor. Magnetic Flux Tube for more natural music reproduction.