In my experience cables without a shield can be more open. Clear Day Cables I believe have no shield on their IC’s and I’ve never had an issue with them picking up EM/RFI - they sound pretty darn good. I have several Kimber Kable PC’s that I believe have no shield as well and no problems in my system. If you’re going to build your own or buy a cable with the shield make or have them make it so you can float the shield to see how it works in your system. As mentioned above I believe, on a PC the shield if needed is connected at the wall receptacle only. With the proper cable geometry that cancels EM/RFI a shield is not required. Phono cables more than likely do need to be shielded.
