Manny Fufish
Power User
I routinely see people whose hearing can vary 5-10 dB depending on the day, weather, allergies, colds/congestion etc. If your ears are down 5dB at 1000 and 2000 Hertz you can certainly notice a change in your tone, just as if you cut or boosted those freq. with an EQ.
Are you an otolaryngologist or an audiologist by any chance?
We could use one of those around here...