Audioquest SureGrip 300 Gold Spade Connector
Spade connectors are the contact point between an amplifier and speaker. Therefore it is important that the banana plug is capable of passing the signal to the speaker without adding any extra noise.
Audioquest's SureGrip 300 connectors use Direct-Gold Plating over a high-quality Beryllium Copper base metal. SureGrip300 plugs uses no underlying brass layers that would inevitably cause distortion and otherwise damage the sound. As well as that, the SureGrip-300 sports an effective Cold-Weld attachment system and features an attractive non-metallic POM casing.
High Purity Purple Copper
High-Purity Purple Copper is a premium audio copper alloy. It provides a drastically cleaner, clearer sound compared to the brass or phosphor-bronze used in common connectors.
Pure "Hanging Gold" Direct-Gold Plating is optimized for sound. It looks dull because there is no underlying layer of shiny, distortion-causing nickel.
Cold-Weld System creates an ideal connection with better sound than solder.