If you have money for it then get it. I use them between my preamp and amp. Fantastic cables. Drops noise and increase signal so much that you hear it the moment you connect them. I really could not believe that a cable can improve sound so much. I would never have believed it unless i tried. Before buying them, i really wasn’t prepared to spend this much for an interconnect but my dealer ensured that this was the best cable for me. I took a leap of faith and it paid off. One thing to remember, unlike copper, gold and silver do not age. They will conduct signal 50 yrs from now on like the day you bought them. Can’t say the same about copper cables.
I liked them so much that i bought 550l speaker cables. Again, expensive purchase for me and unsure about the performance. The speaker cables did require break in. They did not sound optimal when new; i just knew it. Sounded close in and little improvement on 3D sound field i expected to hear. After about a month of use, all I can say is that my gear may stay or go, but these Siltech cables will be with me for very very very long time. I plan to purchase Siltech power cords near future.
I honestly think that having right cables are the foundation for superior sound reproduction from hifi and without them, one would not know true capability of that hifi setup.