ive been playing bass for a whileeeee
and i picked up this guys upright bass at schoolon sat and decided i liked it

but the thing isss
im thinking of getting one
but could i play it through a bass guitar amp?
because its jus the had this like box thing that he plugged into the bass and the amp and apperently that made it sound better, is it a preamp?
and how much would one of those cost?
sorry im a noob at electronics and all that so yeah