The relation between electronical engineering of audio gear must be related to physical acoustics with speakers case for example via psycho-acoustics and room acoustic properties....
But nevermind the set of measures from electrical to the physical acoustics one, the psycho-acoustics measures also are necessary... not only the general psycho-acoustics measures for all people averaged but the specific individual one too ...
Then claiming we can predict sound quality perceiving experience from engineering objective measures only is worst than a lie, it is an half truth...a marketing necessity for sure ..."buy this,problem solved, it is the best designed gear" ...This is pure half truth than worst than a lie. it is propaganda matter called : "marketing" ...
If for acousticians hearing is yet a mystery, i dont think it is a settled matter only for ASR members ...
Objectivist as subjectivist are deluded by their gear pieces but from different reason pertaining to each one group obsession ...
Study theory of acoustics not just room acoustic...
But at least "subjectivist" trust their ears ability to be trained over dials measures...Then they could learn acoustics concepts not with their brain only but by "ears" ....