Most of my interconnects are at least 30 years old. These include Purist Aqeous, Tara Labs Analogue Standard, Cardas Twinlink and Audioquest Emerald hyperlitz. I no longer need 4 sets of ICs, but I still use the Purist and the Tara. The Purist were bought when the company was just starting out, and Jim Aud came and gave a presentation at a small shop nearby in Massachusetts. These are the original ones with the clear jackets, and 30 years later they have not lost any fluid and still sound fantastic. The Tara were marketed as specific for phono, and I have some new Cardas Iridium Phono on the way for comparison. The rca plating is wearing off on the Tara, otherwise I may not even have looked into replacing them.