Over the years a lot of small changes were made and custom plugs were created for specific customers. There were a lot of requests for an XLR. The challenge was, what can we do to make a real improvement? As we gained more experience with materials and learned more about how little improvements in conductivity can be heard by the musician, we came up with our first XLR’s. The originals sounded great, but there were supply issues. The XLR went on hold while the bugs of moving a manufacturing operation were worked out. The shells were redesigned, other parts retooled and the new XLR was finally released in 2013. The Tellurium Copper pins and Beryllium Copper sockets produce a cleaner, more natural sound than others on the market.