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. 

czarivey "The material inside pretty sleeves when opened turned out to be neither OFC nor Silver, but the discussed cheap brass!"

- I would like you read more about this, would you please provide a link.

@tkrtrb125 +1

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. 

I’ve often wondered about this.  I’ve got both silver and copper and have experienced a range with both.  The thing I wonder is if copper is perceived to be more “balanced” because equipment may be more commonly voiced by designers using copper cables thus making silver sound bright by comparison.  The flip side would be, if equipment was designed more with silver cables would copper then sound a little less balanced and a little overly warm or veiled?  Probably a question for the ages, but as always system synergy and personal taste should be the final arbiter always regardless of metallurgy.  But brass?  Not when copper and even some silver cables can be had for (relatively) reasonable prices, which makes brass a non starter in my book. 

@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. 

This topic could go on forever, cables and connectors at least, rabbit holes galore

Different types of copper (PC-OCC, PC-OCC-A, Triple-C, OCC, UPOCC, OFC, UPOFC, 102 SSC, Nano liquid, etc.

Coatings: Silver, Palladium, Rhodium, Gold, nano Au/Ag, CFC, etc