Audio recording reproduction is related for sure to the gear design...But it is relative to the room acoustic potentials too...
We can use this analogy between piano and tuning though , because a small specific room coupled to specific speakers and gear is not a perfectly designed DSP system as in Dr. Choueri perfect design compared to it... The gear coupled to the room is like an imperfect out of tune instrument... It resemble an instrument to be tuned for the ears pleasure, because the different distribution of the pressure zones of the room are like the cord of a piano must be controlled and acted upon to compensate for the gear limitations and the owner hearing limitations using measures and listenings to improve it or "tuned" it ... Small room acoustic is not Great Hall acoustic, different acoustic architecture completely because of the difference in reverberation time positive and negative part among other things...
The acoustician , or here the improvised acoustician, the room’s owner, may and can tune it like a piano tuner tune a piano indeed ... Imperfect results are not bad results if they astonishingly improve the experience at no cost...
Electronical Reproduction of a recording and small room acoustic translation are two different things..
They fuse together in the revolutionary design of BACCH filters system for example in a virtual room processing technology...It will be my ONLY upgrade one day...
But when i was alone in my room i tuned it, as imperfctly it may be at the end , it was astonishing for my ears, and with them... With succees FOR ME and for my experience AT NO COST ... And i learned a lot in the process...
Audio is about psycho-acoustic first and last, not about the gear market nor it is about the welcome falsification of the market claims by Amir , so useful it can be and it is...
But before anyone draws an analogy to audio reproduction, pianos are instruments, not reproduction.:)