Why am I experiencing listener's fatigue?

What is your definition of listeners fatigue? My experience with listeners fatigue had to do with a very bright and edgy sound. I wanted to listen longer, but could not because the sound produced by my system gave me a headache. Replacing my speakers solved that problem, but then I found I was simply bored. I gave that system to my ex-girlfriend, and it is still up and going. I get the opportunity to listen to it when I baby-sit, and now I can discern that sound as being rather lush- Not unpleasant, but not very involving either. I would describe it as the perfect after hours babysitting tool! Little Nicholas hasnt got a chance! A nice meal of diced chicken and mushy squash, and then we are all set up for the rocking chair and a steady program of megadeath darkness and grief-all his parents favorite music. In a matter of minutes this sound -the only sound it produces, has nick slumped over and snoring. That could be a form of listeners fatigue too, I suppose, or just plain case of audiophile imposed child neglect. I am not sure. Diced chicken and dull music-sigh...hopefully he will forgive me. In your case, it might be helpful to describe what it is that listeners fatigue is to you. I have B&W cdnts now, and I have always thought Manley Stingray might be a decent pairing, if not a bit underpowered.