OBT-6000 Meeting Master (Discussion+Vote+Video) Full Function Digital Meeting Microphone Conference System   Master of meeting system of OBT-7600 Digital control the conference system unit are thansferred with the same transmission power view (eight cores).     Can be operated independently or combined with external computer software.     With the function of limiting the numbers of the speakers,this system has the "1/2/3/5 open"working mode for selection.     Built-in 2*50w amplifier and has treble and bass adjustment Chairman mode selection function: You can elect a Chairman private / Chairman ordinary .     Eachof four terminals connecte units more than 60 groups and with load and short circuit protection function,using 250 units simultaneously can be realized if add expansion device .     1 line of  audio output.     1 line of MIC input for external MIC and wireless MIC etc.     3 lines of audio signal output for external recording or speakers.     Frequency Response: 100Hz-18KHz; Total Harmonic Distortion: 100Hz-18KHz audio conference system output is less than 0.1%.     RS232 can be connected with computer.     With built-in 15W speaker monitor.     Power consumption: 500W, power supply :AC220.     Can be installed in standard 19-inch rack.     Meet safety tandard UL or CE and CCC.     Shenzhen OBTPA Technology Co., Ltd(www.obtsys.com) is a company which integrates research & development, manufacture and sales. It stands out of the high-tech industry realm of public address system among other competitors. Our company has been always adhering to the business philosophy of continuous innovation and creating value from customers since 1999 when the company established, hence a various of products has been successfully used in the big famous events such as the Olympic Games, World Expo, Asian Games, etc. these achievements make us gain a various of patents and establish a good brand image in the industry. All products have assed CE, FCC certificates, and the “OBT” brand trademark has been registered in the European Union, the United States and Japan. Our company has always focused on the innovative development of audio and video applications. Its products cover analog PA system, digital PA system, SIP video PA system, POE network audio speaker, professional audio speaker, paperless conferences, video conferences and other products, after more than 20 years of development, we have independent research and development, production and application design capabilities, can well solve the compatibility, reliability and advanced issues of communication, emergency, command and other issues. Products are widely used in the safe cities, smart parks, smart campuses, smart hospitals, and smart stations and other fields, successfully established a good brand image—OBT. We are committed to developing into a world-class video integration PA system manufacturer.