QED Performance Speaker Plugs 10 Red 10 Black

The Performance speaker plugs are made of solid brass which has roughly twice the resistivity of copper. For this reason, they were designed so that their cross-sectional area is at least double that of the cable to which they are connected, effectively cancelling out the extra resistance of the plug material. QED then plates the connector with high purity gold which has a resistivity almost as low as copper but importantly does not oxidise in air. The relatively smooth gold surfaces provide a larger contact area than uneven copper strands in the cable. Additionally, the contact surface remains clean and low resistance for life due to the non-oxidising nature of the gold plating. The Performance plug pin section is designed to maximise contact area throughout the wide tolerance range encountered in 4mm amplifier and speaker sockets. Some sockets are quite tight whereas others are loose, so the spring-loaded Performance blade is designed to fit into smaller and larger sockets with equal insertion force.