500 Series Banana Speaker Connectors – Fits Standard Banana Jacks (Supports up to 9 AWG) One-piece solid High-purity Pure Purple Copper instead of inferior sounding multiple pieces or brass. Especially pure "Hanging Silver" or "Hanging Gold" directly-plated without normal sound-damaging intermediary layer. Cold-Welded connection instead of inferior sound-damaging solder. 500 Series Multi-Spade Speaker Connectors - Fits up to 9 AWG Speaker Cables One-piece solid High-purity Pure Purple Copper instead of inferior sounding multiple pieces or brass. Especially pure "Hanging Silver" or "Hanging Gold" directly-plated without normal sound-damaging intermediary layer. Cold-Welded connection instead of inferior sound-damaging solder.