A cable support apparatus for suspending audio and/or video system cables above the floor. The device is configured as a sandwich of at least three layers of electrically conductive foam, including first and second outer layers fabricated from a low density electrically conductive foam, and an inner layer disposed between said first and second outer layers and fabricated from a foam having a higher density and greater rigidity than the foam of said first and second layers. The inner layer includes a V-shaped crotch for supporting a cable with minimal surface contact. The cable support minimizes floor vibrations transmitted to the cable, breaks up resonant vibration modes within the cable support itself, and neutralizes static-electrical charge differentials between the cable and the floor.