Barometric pressure, temperature, moon phase?


I’m off work tomorrow, made sausage and peppers for dinner, and now I’m enjoying a Sazerac on a beautiful summer evening, listening to Joni Mitchell.  All is right with the world, at least at my house.  But...  the stereo sounds ever so slightly, not quite there.  It did the other day, but tonight, it’s missing some tiny bit of something.  Has this ever been experienced by any of you out there?  One day magnificent, another day, just ever so slightly not quite as good.  Atmospheric conditions?  Mood? Magnets?  Thoughts?
dprincipato
I just noticed @kosst was looking at this similar to my first reaction.  Sorry if my thoughts were redundant!
Weather can be a big determinant in your mood and therefore, your listening pleasure. WiFi is noxious to some people and to those who can tolerate it, or don't even notice it, it can still be negatively affecting you without you being aware of it. It's all over the place.

Factor in microwave transmissions and how your day was by the time you sat down to listen and it's no wonder why sometimes your system just doesn't cut it. 

All the best,
Nonoise
I agree w/elizabeth could be sinus/middle ear related.  Since I was 30-something I have had allergies year-round where I live (tree and grass pollen) and it definitely affects hearing.  I take Loratadine daily and it seems to help.