Somebody who listens to the HiFi
setup instead of the music.
Well, to be fair it's more like this: to a true audiophile, even the tiniest imperfection in the sound is intolerable and prevents them from truly enjoying the music. Thus, they are willing to spend enormous sums for equipment that has no imperfections. On the one hand, there is a big, big difference in quality between cheap low-end crap and really good hardware. But on the other, there clearly are excesses where religious fervour prompts people to spend insane amounts of money on speakers or cables that have no measurable advantage over the merely expensive alternatives.