This is an interesting problem. I'm not an audiologist, but am sure that any noise above 75dB is harmful to an _adult's_ hearing. If the case can be made that i

This is an interesting problem. I'm not an audiologist, but am sure that any noise above 75dB is harmful to an _adult's_ hearing. If the case can be made that infants and toddlers hearing is more sensitive and should be accounted for, then by leaving the toys so loud we're choosing function over the potential well-being of the toddler's hearing.