Ideal for professional sound technology and best microphone and loudspeaker signals. All-metal plug with locking mechanism for 100% contact reliability. 3-fold shielded. Elaborately silver-coated, copper-modulated OFC cable material for an outstanding sound experience. Integrated kink protection and strain relief to protect the conductors. Cotton fabric to protect the cable. 24-carat gold-plated full metal plug. Tri-Protection. Symmetrical construction. HRA - High Resolution Audio. Professional Audio. 30 years warranty