Yes electricity doesnt know cheap from expensive wire, but if its cheaply made with inconsistent gaps or something in the strands the speaker will tell you the difference in sound.
That's my point. If the material is cheap, it will suffer when playing music. Maybe that's just me.
Cables in general need to balance many factors in transmitting a simple signal from one component to another. These include resistance, capacitance, inductance, RF radiation, phase distortion, hysterisis, and probably a hundred other. I've built many DIY cables, with the last set being a balanced pair. They sound good, but the somehow don't approach the commercial stuff on my system. I'm sure some will say :spend: but it works for me.