I was about ready to say that if you have to put a descriptor in quotes yourself, you know it is vague; it is time to define it. Then you did. But you still didn't quite get there, because surely you understand that there is no such thing as "without limit"
, that there is a common, well-understood term for this "bigness," ie: dynamic range, and that it is understood to mean the range between the quietest sound that can be heard above the noise floor to the loudest sound a system is capable of producing.
We have our common language. I wonder why we keep deliberately obscuring it?
Tim