I utilize the spacing, intensity and duration of my wife's incessant high amplitude screeches to "turn that friggin noise down", along with a quick subjective estimation of the quantity, size and weight of all the household objects being simultaneously thrown at my head, as a general guideline pertaining to the proper setting of my preamp's volume control.
I really appreciate her altruistic devotion to the continued safe operation of my gear and hearing capacities. Are all you guys and gals this lucky?
Bless her,
Tim