Audioquest welds their interconnects. They claim welding improves purity of the signal transfer. I suspect they use it either for ease of production or for marketing since, as Al explained, it would not make any difference. Purists (including AQ) believe that IC connectors should be silver and not gold plated because of better conductivity. Again, I don't see how.
Quality of solder might be important in speaker cables. I crimped and then soldered spades (just in case).
Quality of solder might be important in speaker cables. I crimped and then soldered spades (just in case).