Gold coated brass speaker spades

@czarivey time to get educated me thinks.

https://blog.eaglegroupmanufacturers.com/metal-properties-conductivity

 The best materials for audio cables depend on the desired sound quality, budget, and application. The most important considerations are the conductor material and the insulation material: 
Conductor material
The most conductive metals for audio cables are silver and copper: 
Silver: The most conductive metal, but it's expensive and tarnishes when exposed to oxygen. Silver cables are perceived to have a brighter, more present sound. 
Copper: The second most conductive metal, and the most common choice for audio cables. Copper cables are perceived to have a more balanced, "warm" sound. 
Gold: Less conductive than copper or silver, and expensive to produce. Gold is often used as a coating on cable connector ends. 
Aluminum: Has low conductivity and is typically used in inexpensive cables. Aluminum cables lack clarity and brightness. 
Insulation material
Common insulation materials include PVC and Teflon: 
PVC: Cost-effective and offers adequate protection for most applications. 
Teflon: More expensive than PVC, but provides better heat resistance and durability. 
Microporous PTFE: A low-density dielectric material that offers significant performance improvements over solid PTFE dielectrics. 

@soix you make a valid point about copper and its wide use across all components . I to have some silver in my system (cables digital) but never would think of brass for any function, connectors etc. 

Yep.

Brass wire is for hanging pictures, period.

Just another reason to avoid the fake stuff from PRC or any country. 

@soix +1