bullet proof amp


I need a bullet proof amp to put into my shop where many people could use it,some not so careful, that can drive 4 speakers. vintage preferred.
128x128mbkpao
Get Bullet proof speakers (pro gear) first - usally these are what gets destoyed very quickly!
McIntosh mc2105...circa 1967 thru 1975 or so,and still available almost daily on the 'gon...2x105 watts!
I don't know whether Bryston 4B-ST can be considered as vintage. I remember reading some comments about these amps being used in some night clubs and discos by DJs, and that cigarette butts are discarded on top of them and drinks spilt on them, and after continuous play at near clipping levels the amps never failed.

Also, I read somewhere here about the Krell KAV-400XI being dropped from a waist-level table onto a concrete floor and come out fine, although the concrete floor was chipped. Certainly built like a brick.