subject personal audio history.........( - o + ) ...........history audio industry object
The " ( - " are the left subjective side and " +) " right objective side of the " bias zone" where the returns are related to a balance between subjective impressions and to objective engineering progress...
The "o" is the center bias zone where the returns are impossible to really assess or calculate with clear subjective or objective points....
We all at some moment in time reach the center point " o " where no progress is sensible, for reason linked to our own limitations (hearing personal history) or to our incomplete methods of embeddings that makes impossible evaluation of the audio system Parts and Whole in term of S. Q. or in term of money....
The most important point in my post is the consciousness that the rightful embeddings methods (mechanical,electrical,acoustical) and our own listening history are the unbeknowst factors that play much a role....Not only the cost of the gear like some think superficially....
The point of diminishing returns end to be a fixed point for each of us in particular, but begins like a variable point in general ....