How important Is shielding with RCA wires? (Ethan Winer, new video)

It’s safer to be shielded....just like being vacinnated......or a condom, except you only have to do it once.

Non-shielded, POTENTIALLY more problematic and can be for real and easily heard (or not so easily even in other cases) as I related above. YMMV. It all depends. Like radio reception. Like most things.

I am very proud of my $30 mu metal foil shielding solution for my phono section. Allows me to use the DNMs which I strongly recommend. I think I will brag about it here until no end now like some...or one...we all know who I’m talking about? Oh wait, I did it 10 years ago..........is it too late?

Most important with low level phono signals. Less so elsewhere. My go to RCA ICs are DNM Reson ...unshielded. For phono as well. They are affordable and MOST coherent. Had to do some alternate shielding to enable that without inducted noise. My HVAC is just outside the wall behind the hifi.   Step up phono transformer needed the extra shielding as well and is located inside mu-metal foil. See my system photos for the mu-metal shielding implementation. No audible inducted noise with that setup. Dead quiet! Would still prefer the HVAC were elsewhere. YMMV.