Vlliodor professional Audio Engineering has many years experience of design, construction on stage, multifunction meeting room, disco, KTV, school broadcast, gym, control system, and audio engineer.with the digital Technology development, professional audio, E.g. s/n digital signal processor, digital multimedia speaker system, digital effecter etc. The consumer get more advantage from these.perfect products should have strict sorts in different condition. Vlliodor products has passed many analyses under different conditions and supply many products series, so that so satisfy many professional audio field, E.g the speaker system in standard gym, stage performace, advanced amusement, theater, broadcast, musical equipments and so on.These series product were made according to especial condition. It had good Reasonableness and Q/P.