These cables seem to have one problem, very poor shielding. Do not even think to put them close to PC connected electrical wiring, noise is pretty much guaranteed.
I have multiple other unbalanced same type Audio cables, which do not have this issue. Some of those are double shielded, some of them are not, so it seems to be just an poor shielding problem.
They do work though, if you route them far enough from PC power cables, so you can still use them with pure audio gear.