It depends on your situation. I made a 12’ unshielded RCA cable and I have no issues with noise. They sound great! They don’t run next to anything that would induce noise however. You might consider shielding if that weren’t the case.
Is shielding necessary on interconnects & speaker cables
I have a tube cd player and a intergrated tube amp. I am getting ready to buy speaker cables and interconnects. Do I need to buy shielded or unshielded cables. What are the pros and cons of each type. Is there sonically any differences. I am leaning towards unshielded. Thanks