In the context of cabling, I have read about the 'quality' of connectors (Solid Gold with pixel dust, silver, bad gold plated steel, etc).
Yet, very little about a very critical point I can see, and that is the SIZE of the CONTACT POINT. One article compares all the fancy versions of silver and copper (going from 100 for cheapo copper to 107 for fancy expansive silver for conductivity), yet little is mentioned how much of the 7% more juice is lost in a badly designed CONTACT POINT. A banana plug for example male/femal combination my have just THREE super TINY contact point through which all that good juice has to be pressed through. If I had to design a speaker connector, it would look more like the battery post and clamp on your car to ensure the biggest possible surface area for the contact.
Curious if tests (listening and measuring) have been done to compare for example a banana plug connection with (could be someone larger connecting area) spade connection?