Clark’s 700-DB series multi-pair audio cables are built specifically for direct burial, permanent installation applications. The 700-DB series features the same easy-to-terminate single-pair components as Clark’s original 700 series, but with a virtually impenetrable polyethylene outer jacket and the addition of a water-blocking tape that wraps around the inner core. This construction is extremely puncture resistant and provides an additional level of protection by absorbing moisture within the water-blocking tape in the event that the jacket is penetrated.