Amazon.com: Banana Plug, U Spade Speaker Plug Audio Screw Fork Connector Jack Adapter with Gold-plated Pure Copper or Flexible Connection of the Cable to Hi-Fi Boxes, Amplifiers (2pcs) : Electronics
CESS-061 Spade Fork Binding Post to Banana Plugs Amp Speaker Adapter, 4 Pack | eBay
Little Things: Converting Speaker Cables from Banana Plugs to Spade Lugs and Vice Versa - HomeTheaterHifi.com
Transparent – Spade to Banana adapter | HIEND-AUDIO
Transparent Spade to BFA Adapter | Transparent Audio