I recently acquired an Ampeg BA115HP. Previously I have never owned anything more substantial than Roland and Peavy 35 - 50 watt amps. I would love some tips and hints for using and maintain this new piece of equipment. Also, the ampeg has a balanced line out and the manual says this can "connect to recording equipment, house sound board, or external amplifier". I understand about the recording equipment, but does this mean that I can also hook into a PA system, and also possibly power a more speakers? thanks.