Audiophile High-Definition Audio Interconnect Cable Bundle Custom Made by WORLDS BEST CABLES &ndash; Using Mogami 2497 Wire and KLEI Pure Harmony Phono/RCA Connectors All our bespoke cables are professionally soldered using WORLDS BEST CABLES proprietary 4% silver solder blend & a nitrogen-assisted soldering process unique to us, exceeding industry standards, improves integrity of solder joints over traditional methods.