Hand in hand conferencing system: It uses the microphone end to end series connection, that is, the first microphone to receive the conference host, from the first microphone leads to a line connected to the second microphone, and then leads from the second microphone Line received a third microphone, followed by dozens of series, so named after the hand-held conference system; all microphones using phantom power supply. Hand in hand conferencing system structure Hand in hand conferencing system amplifier and speaker parts and the same as the traditional conference system

Host unit
Each CPU in three-way series output, plus expansion of the host can connect 180 microphone units;
With the number of simultaneous working microphone limit switch, select "1" "3" or "6", can also be used to answer the occasion;
A background music volume and a total volume output regulator;
Audio signal output interface, audio signal input interface (level adjustable)
Rated voltage: AC220V ± 10% 50HZ
Frequency response: 20HZ-20KHZ
Output impedance: REC: 200Ω LINE: 200Ω BALANCE: 300Ω NOBALANCE: 400Ω
Signal to noise ratio: 78db (1KHZ THD1%)

Microphone unit
The chairman unit has a priority floor switch, which can be closed at any time to the seats on behalf of the unit
Microphone ON / OFF with long life without noise touch switch;
Built-in high-fidelity speakers;
1 headphone jack with volume control;
Built-in high-fidelity capacitor-type sound head, the sound reduction is good, high definition, low noise, efficient whistle suppression function, super pickup effect; microphone is turned on, the sound head red for indicator light;
(Sub-chair units and delegate units)