I was very satisfied with my system for many years. Then for some reason my Dahlquist DQ-10's piezoelectric tweeter started sounding screechy. I started to listen to the bass response which could be lacking at times. I was more and more listening for the DQ-10's failings and successes at music reproduction, not the music itself, after all these years
The more I couldn't help but listen to the speakers, rather than the music, the more I realized my old friends needed upgrading. Mind you they sounded pretty much the same as always. I just couldn't listen to only the music anymore.
I'll shed a tear for them when my Magico A3's finally arrive this month. They've always been sitting near the corners of each living room in every place I've lived, like bookends, old friends, for the best part of my life. (credit to Simon & Garfunkel).
Mike