Okay. I know this isn't a guitar question, but theres no sections for this. Basically if I wanted to use a PA for like say practices, would I just need to buy somthing like http://www.musiciansfriend.com/srs7/g=live/search/detail/base_pid/482059/ that? Does that unit produce the sound or whatever or would I need to get one with subwoofers like http://www.musiciansfriend.com/srs7/g=live/search/detail/base_pid/632200/c_lv=1/ that for instance? I don't need amazing quality equipment or sound really, since it's only for practice and venues or other places around here pretty much have their own system.