Burn in time...Reality or something else???

Hello,

It occurs to that whenever you get a new piece of electronics, speakers, cables or whatever they always seem to sound better after a short "burn-in" time?

Your eyes adapt to low light if you start working at night,

Your body gets used to hot temperatures,

Your sense of smell gets used to the smell of $h!t if you work with horses,

Why not our EARS???
Are they just adapting the new environment?