Functional characteristics
1.4 microphone input, each microphone independent volume adjustment, independent 48 fantasy power supply, composite cannon interface (enter feedback function).
2.4 independent output, with one key mixing function. You can output each channel by default, or you can switch all inputs in all four channels.
3. Support U disk and Bluetooth audio playback (optional),
4. Stereo 3.5 headphone port line input, can input music, radio, etc., can be adjusted independently (without feedback function), will not produce hum caused by the power supply.
5. Professional recording output Lotus interface (without feedback), can be connected to recording equipment.
6. Stereo Lotus interface line output, independent volume control, can switch music with microphone mixing 1 output.
7. Using adaptive environmental whistling suppression algorithm, high-speed floating-point digital audio processor can quickly and automatically eliminate whistling completely.
8. Advanced subband noise reduction and elimination technology, built-in adaptive dynamic noise filter, can filter out the background noise of the field environment, but does not affect the voice signal transmission.
9. The system intelligent bidirectional level control technology can obtain clear, continuous and uniform voice output, maintain the coherence of the speech tone and clear speech, make the listening sense more comfortable, and increase the gain up to 8-15dB. Microphone pickup distance is 0.5-1.2 meters
10. Built-in 24Bit A/D, D/A conversion; 32-bit DSP processor, 48KHz high-speed sampling.
11. One-click intelligent manual debugging, no matter the change of location, temperature, humidity and decoration in the room environment, the system installation does not need to conduct sound field debugging.
12. Keyboard lock function: After debugging the device, the administrator locks the panel keys to prevent non-administrators from performing operations.
13.2.0 The color display displays the parameter status, and the menu can be switched between Chinese and English.
Technical parameter
2-XLR and 2-TRS: Balanced or unbalanced input modes
Input impedance: Balance: 22K
MIC Maximum input level: 4.2V (RMS) Smart off
Line input: 0.775V(RMS)
Output impedance: Balance: 150 euros, non-balance: 300 euros
Maximum output level: 2.8V (RMS)
Dynamic range: >100dB (A weight)
Distortion degree: > -88dBu
Frequency response: +/- 1dB (through frequency response 30Hz to 20kHz4). Feedback suppression frequency response 50Hz~18KHz)
Bottom noise: <1mV
Power supply: AC90-240V/50-60Hz
Power consumption: <20W
Volume (width X depth X height) : 480*220*44MM
Gross weight: 3.8KG
