I would go as far to say that "inverted signal" (which is what you are actually referring to) doesn't make a difference when the equipment is able to treat both polarities of the signal equally.

However not all equipment is able to do this. Solid state running in class A with little headroom or valves, microphones and speakers certainly don't. So its entirely logical that a difference could be heard.

So you are not mad after all about this subject anyway. Now about your Dalek identity crisis, take that plunger out of your mouth and come here..................