It is obsessive. My father was an audiophile. His investment in hardware was the cause of his divorce. He explained why he couldn't settle for lesser hardware or listen to certain genres. Some people's hearing is hyper sensitive to their detriment. There are people with a similar trait, called super tasters, whose tastebuds recognize or amplify flavors that escape an average person. To them, spicy foods can be overwhelming and unpleasant. In comparison, some audiophiles aren't seeking details in the sound, they are trying to minimize, or avoid, irritating sounds that average persons are immune to. For example, my father intentionally clipped the lowest bass frequencies, they literally gave him a headache.
You might ask, why would someone with such a sensitivity even listen to music? Filtered to his requirements, music could be a reprieve from the environmental noise at the end of a day.