Entirely possible....I couldn’t disagree with anything about the psychological side which then brings in other aspects of us like our emotional state at the time of listening or altered states due to getting high in one form or another...
Regarding speakers, manufacturers designate varying hours needed in their opinion to hear their speakers at their best. So, I also think there are speaker changes beyond 20 hours though to what degree seems up for grabs...These and other factors influence our perception of a drink or food or cigar as being exceptional one time and the next not so much. So much going on in and around us when we switch that music on. One of life’s greatest joys for us.