The interesting thing is my dainty upstairs system doesn't seem to fatigue his ears. I kindly suggested it was because I never tweak my system or replace any of the components or play it over 70dB. He responded by looking at me through his eye slits.
To be sure his ears were functioning properly, he decided to clean them with a concoction of hydrogen peroxide and several other household products that I recall using in elementary school science class to make a miniature volcano. Since he had not appreciated my two cents on the subject of why my system was superior to his, I decided not to pipe up with my concern about him fashioning Old Faithful on the side of his head. Instead, I dutifully assembled the requested ear-cleaning ingredients and quietly pulled up a chair to watch.
And that, my friends, is audio winning.