I might be wrong but since you have been a piano tuner for many years, it could be a matter of perception. When I am forced to have my Bose close to me, I perceive too much bass, but when checking the room out, and asking people, I find the eq fine. That addesses the muddy problem, but unless you are playing guitar, how can you be sharp with a KMA?
I don't John meant that the pitch was sharp, but rather the tone/EQ was perhaps too bright.