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* Built-in dedicated digital audio signal processor to effectively prevent voice signal distortion and attenuation.
* With 4-channel 3.5mm audio input interface, including teaching courseware input, wireless microphone input, musical instrument input, and recording and broadcasting input.
* With 3-channel 3.5mm audio output interfaces, including recording monitoring, line output, and recording and broadcasting output.
* With 1 microphone cascade interface, support connecting an expansion microphone to expand the sound pickup range.
* With 1-way RS485 interface, support the host computer software debugging function.
* Support 5-band EQ adjustment function, which can adjust the sound field effect according to the sound environment of the installation site.
* Support audio adjustment function to realize input and output mute, volume, AGC, low-frequency filtering, noise reduction, output limiting, etc. control functions.
* Support echo cancellation function to prevent the remote end from being collected again after being played by the local speaker and transmitted back to the remote end to cause echo.
* Support automatic gain function, which is used to control the dynamic range of the microphone's pickup signal to achieve consistent sound quality near and far.
* Support anti-reverberation function, the sound is clear and natural, not turbid.
* Support parameter query, parameter configuration, parameter saving, parameter download, factory reset, help and other functions.
* Adopting one-line digital audio transmission technology, data transmission and power supply are two-in-one, with strong anti-interference ability, solving the problem of cumbersome construction wiring and reducing project costs.
		
	
		
	
		
		 
							color
						 
							White
						 
							shell material
						 
							Metal
						 
							Pickup range
						 
							360° omnidirectional sound pickup, with a sound pickup radius of up to 8 meters
						 
							Sensitivity level
						 
							-34dB
						 
							Frequency response
						 
							100Hz~24KHz
						 
							Dynamic Range
						 
							84dB(1KHz at Max dB SPL)
						 
							SNR
						 
							68dB
						 
							MAX SPL
						 
							110dB
						 
							Output impedance
						 
							Maximum 100 ohms unbalanced
						 
							Output signal amplitude
						 
							2.5Vpp/89dBSPL (A-weighted @1KHz)
						 
							Remote echo cancellation
						 
							Echo delay ability: ≤256ms, echo suppression ratio: >60dB
						 
							Ambient noise cancellation
						 
							Noise reduction range: 0~40dB optional
						 
							AGC
						 
							Gain range: -24dB~-5.5dB
						 
							Working temperature
						 
							-40℃~70℃
						 
							Working power supply
						 
							AC 100V~240V 50/60Hz 0.2A,DC 12V 410mA
						 
							Power consumption
						 
							1.8W
						 
							Dimensions
						 
							120*120*30mm
						
			
				
	
					 
				
						 
					
						 
				
					 
				
						 
					
						 
				
					 
				
						 
					
						 
				
					 
				
						 
					
						 
				
					 
				
						 
					
						 
				
					 
				
						 
					
						 
				
					 
				
						 
					
						 
				
					 
				
						 
					
						 
				
					 
				
						 
					
						 
				
					 
				
						 
					
						 
				
					 
				
						 
					
						 
				
					 
				
						 
					
						 
				
					 
				
						 
					
						 
				
					 
				
						 
					
						 
				
					 
				
						 
					
						 
				
					 
				
						 
					
						 
				
					 
				
						 
					
						 
				
					 
			
		
						Weight 
					
					
						0.16kg