I think I have a pretty nice system. Yesterday our internet was out and left with nothing else to do I sat down to listen to my system with my vinyl rigs (what do you streaming-only folks do if your internet goes down?). The first side or two sounded good but then after about an hour I found myself feeling uncomfortable. Something about the sound was annoying me but I could not for the life of me figure out what. I tried listening to different records including some that are known to be good. No change. I turned it off.
My point, if there is one, is that everything matters. Sometimes you can't figure out what the problem is. It might be you (me).