..like everything else. I used to make cable and sold it in New Jersey, New York, et al. We were always testing formulations to provide the best that we could for our customers. Sometimes, one absolutely must have shielded cables or some noise, rf, etc., will sneak in. If you need shielded cables, then you need it....however, that same cable without shield will provide a more open sound without the shield, if it can work in your system.