So theres Left, Right and Ground wires, there are not “bass” or “hi-freq” wires, so if 1 is damages shoudnt it only hear quieter or not at all?

  • Your question is worded very oddly, but to attempt to answer it, headphones (most) operate off of an analog signal from a DAC (digital to analog converter). In any analog setup you’re going to have some amount of signal transmission or line noise unless the two transmission lines are entirely shielded or entirely separated.