Carefully considered solutions and the best materials have been used in the design of FOUR Connect High-End STAGE5 RCA cables to create a top-quality RCA cable. STAGE5 cables use the usual thicker tinned OFC conductor as conductors. The cross-sectional area of the conductor is 0.4mm2, which is really quite oversized for an RCA cable. The structure is a triple-protected, very tightly twisted Twisted Pair structure that eliminates interference. The insulation of the connectors is HDPE plastic with high insulating capacity, and the connectors have a twist lock to guarantee the best contact. Each connector is tested for tensile strength in quality control to ensure safe and tight contact.