Differences in individual hearing no doubt helps account for the wide variety of gear out there that is generally judged to sound good and be of high quality despite the fact that chances are two individuals are not assured to like the same thing by any means.
I sold a lot of good complete systems years ago part time in college (when buying a complete high fi rig from source to speakers in one shot was still a very fairly common occurrence, especially in "College" towns). Certain models/brands were more likely to appeal to more, but individual listening preferences varied. Few bought exactly the same thing.
Individual hearing changes as well over time, as do most other more obvious aspects of our bodies. Ears do become better trained to recognize things but also loose their ability to hear higher frequencies. By the time you pass 50, there is a good chance you will not hear well above 12khz or so even if you did hear clearly up to 20khz when young.
I sold a lot of good complete systems years ago part time in college (when buying a complete high fi rig from source to speakers in one shot was still a very fairly common occurrence, especially in "College" towns). Certain models/brands were more likely to appeal to more, but individual listening preferences varied. Few bought exactly the same thing.
Individual hearing changes as well over time, as do most other more obvious aspects of our bodies. Ears do become better trained to recognize things but also loose their ability to hear higher frequencies. By the time you pass 50, there is a good chance you will not hear well above 12khz or so even if you did hear clearly up to 20khz when young.