●The main unit can support 60pcs delegate units and chairman units, it could be extended to support more than 500 units by adding more extension main unit.

●It attached an approx 13-meter long cable used to connect main unit and delegate units, and the cable length can be custom-made according to the actual situation.

●With more groups audio signal output connectors.

●Main unit can be installed in the 19 inch standard cabinet.

●Designed to accord with ISO and IEC914 standards.

●Frequency response:100Hz-18kHz

●S/N Ratio: >75dB

●THD: < 0.1% @ 1kHz

●Power Consumption:100W

●Power Supply: 220-240V,50/60Hz

●Dimension(WxDxH):210x107x316mm

●Weight:4Kg

●Chairman Unit PA-771C/Delegate Unit PA-771D has discussion function

●With anti electromagnetic, mobile phone interference function

●With TALK button and indicator, can control and display speaking status

●Unidirectional condenser microphone, avoidance of airflow & plosion, equipped with windshield cover

●Bendable mic pipe equipped with annular red indicator, it will light when turning on the microphone

●The power supply for all the microphone units is provided 24V safe voltage by the main unit

●Equipped an approx 1.5-meter 8PIN DIN cable for "T" type connection

●Built-in high fidelity speaker with volume control (speaker will be automatically mute when the microphone is turned on), and equipped earphone jack.

●The Chairman Unit has priority button, pressing it can turn off all the Delegate Units

●The Chairman Unit's quantity is unrestricted in the system, and it can be connected in any position

●The Chairman Unit is unrestricted for the system "LIMIT" function

●Accord with IEC 60914 standard and UL & CE certificate

●Frequency Response:100Hz-16kHz

●Sensitivity:-42dB±2dB

●Gooseneck Length:400mm

●Dimension:115mmx153mmx79mm

●Weight:1kg