Ok, im considering differant options to replace my current pa system that i use for small-medium sized gigs. while cruising the internet i found these bluetooth, wireless, 800w, powered PA speakers on musicians friend for $350 a pop. This sounds AMAZING, no cords, no mess. It says that you can stream from an ipad or any other bluetooth enabled device but how would one stream audio from a mixer (unpowered analog 8 channel mixer). I have not found any attchments or any boards that come standard with bluetooth output. How might i accomplish this.