... pa speaker, professional audio, sound equipment, pro audio sound system, pa loudspeaker, stereo speaker, pro speaker, professional loudspeaker. TASSO BG Series ... in research, developing, manufacturing, sales and technical services in pro audio products. Over 15 years of technical experience of our ... as to our success in the industry. TASSO implements a 5M and 6S QA Optimum System in our management. ...