i got a 29.99 memorex boombox from walmart. it fits perfect on its side with speakers pointing str8 up if u put it between the seat belt buckles or whatever u call them. right between the seats of a rzr. it has a line in jack. i got a 6 dollar line in cable and ran it from my phone to boombox. i keep my phone in the polaris shoulder storage bag that is on the rear of the cage. everything works awesome and fits like a charm. i havent even secured it yet its pretty snug right between the seat belts. not the loudest with a helmet on but still plenty loud. only cost a total of 36 bucks. its black and looks very good. probably could get a better sound out of a better stereo if u can find one with the speakers on the end like mine. i would post a pic but cant figure out how. pics on my facebook if u want to see. shane deel wise va. its set to public i think so anyone can view the pics.