"Why must so many audiophiles magnify the relatively minute differences between high quality, great sounding components?"
Because the differences are not always minute. Especially when it comes to preamps. They have a very big effect on sound quality. If you have a different personal experience, that's fine. But not everyone has the same experience.
"ZD, my point is that well-designed Preamps should sound neutral and not color the sound. Neither the Pass XP series nor the Bryston are known to have this characteristic (as opposed to, say, an older Conrad-Johnson or similar tube pre)."
How do you make that judgement? If you were to test both of the preamps we are talking about here, how would you know what one is less colored?
Because the differences are not always minute. Especially when it comes to preamps. They have a very big effect on sound quality. If you have a different personal experience, that's fine. But not everyone has the same experience.
"ZD, my point is that well-designed Preamps should sound neutral and not color the sound. Neither the Pass XP series nor the Bryston are known to have this characteristic (as opposed to, say, an older Conrad-Johnson or similar tube pre)."
How do you make that judgement? If you were to test both of the preamps we are talking about here, how would you know what one is less colored?