Advantage: Banana plugs
Prevent unsafe connections, frayed cable ends and thus sound losses. The Teufel banana plugs enable a secure connection of your speakers to amplifiers or AV receivers. A sturdy screw clamp has a firm grip on all cables with a diameter of up to 4 mm². Permanently elastic spring contacts and a 24k gold coating guarantee very low-resistance, sonically perfect plug connections.
Link to product > Banana plug
Since gold is a very good electrical conductor and also corrosion resistant, the material is very well suited for sound signal connections.