We hear all too often of customers who have used their home sound system for a party & then have to invest in a new Hi Fi or spend money on repairing it after the event!
There are a couple of simple reasons for this.
Home systems & professional PA equipment are meant for very different applications. They both reproduce music of course but home stereo units are meant for listening in a domestic environment at “relatively” low sound levels, whereas PA systems consist of larger, much more powerful & robust components reproducing higher volumes for larger venues for usually much longer periods of time. Background noise also contributes to the equation as the more people present the more power needed for reproducing sound.
So what it comes down to is having the right “tools” for the job!