4 microphone input channels
4 line input channels
4 line output channels
4 loudspeaker output channels
1 USB audio stereo input/output
1 USB serial control connector
1 local start switch
support with IR remote control,USB control,compatible with the internet platform of things.
Input quantification: 48KHz/24bit
48v phantom circuit
Extender threshold value from -120 to 0dB(adjustable) ,gain -120 to 24dB(adjustable)
Delayed output 0-255ms adjustable
≤420ms,echo elimination the length of end syllable≤420ms
with the switch of AEC update energy
THD(total harmonic distortion): ≤0.1%
Frequency response: 50-20kHz(±2dB)
Power amplifier output: 4x120W@4Ω
Functional Description
Main Function:
1. Use high-performance DSP chip with 32 floating points
2. Sustain one-click automatic sound adjusting
3. Sustain remote control
4. Adopt (ANS)AI noise reduction technology, built-in 19 grade noise restrain process ,5 grade reverberation process
5. Adopt (AFC) auto-adaptive feedback elimination technology, current auto-adaptive handling with microphone feedback
6. Sustain (AEC) the function of echo elimination, built-in 17 grade echo elimination process to avoid echo interference produced in the period of remote interaction;
7. Sustain (AGC) auto-intelligent transmission gain control;
8. Built-in (DUCKER)ducking device, used in all the in-put channels;
9. Visual audio matrix Routing, allocated with connector flexibly according to different requirement;
10. In-put and out-put channels: Preceding stage amplification, 5*10 equalizer, 5*30 image equalizer, filter, limiter;
11. Sustain local loud speaking and remote interaction simultaneously;
12. To possess the function of filtering and reducing the noise from the air-conditioners and electric fans in the classroom.