Audioquest SureGrip #100 Series - (Silver Bananas) 8 Pack Beryllium-Copper is stronger, more conductive, and better sounding than normal phosphor-bronze connectors. Direct-Silver Plating looks dull because there is no distortion-causing shiny nickel layer underneath. It is optimized for sound. Cold-Weld System for an ideal connection, better sounding than solder.