The black 500’ W2921 Studio Speaker Cable from Mogami is designed to deliver maximum performance from the Bi-Amp Systems. This cable offers sound transmission with a clear, transparent response, and possesses rugged flexibility for most professional applications. Each of the 4 conductors features many NEGLEX oxygen-free-copper strands in rope-lay configuration enclosed within a color-coded PVC insulation. A tough, low-profile, matte black, flexible PVC jacket protects the conductors.