In my very early days, (1974) I thought I'd be clever and buy a Carlsbro Marlin PA amp and put it through my 4 x 12 so that I could connect not only my bass but also a couple of mics for our 2 singers. The bass sounded really crap! Later I also connected a set of EKO bass pedals too, and yes you guessed it, they sounded crap too.
Recently I used a hire amp at our rehearsal place: it was a 300watt Laney...... really crap too. Nothing like my Aguilar!
Cheers, Paul.