NEXT-proaudio designed the new PFA line of passive and self-powered loudspeakers, specifically for installations, musicians and DJs who want state-of-the-art acoustics and electronics on a limited budget. NEXT-proaudio designed the new PFA line of passive and self-powered loudspeakers, specifically for installations, musicians and DJs who want state-of-the-art acoustics and electronics on a limited budget..PZA MORE SPECS