4 In 4 Out DSP Audio Processor

● 4 analog balanced inputs and 4 analog balanced outputs, with a maximum input/output of 17dBu (5.48Vrms) without distortion● Stereo USB sound card function, supporting playback and recording● USB/RS2

  • Model:: DSP-440N2
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● 4 analog balanced inputs and 4 analog balanced outputs, with a maximum input/output of 17dBu (5.48Vrms) without distortion

● Stereo USB sound card function, supporting playback and recording

● USB/RS232/RS485, Network interface, computer software control and central control function, through the network connection can simultaneously manage multiple devices

● External 8-channel GPIO interface

● LCD screen, supporting configuration of device name/preset/IP, input/output volume, input mode, device version view and other functions

● DSP functions include AFC, AEC, ANC, AGC, AUTO MIX, MATRIX MIX, Noise Gate, PEQ , Delayer, FIR Filter, High and Low Pass Divider, Compressor, Limiter

● Input 15-band PEQ, output 10-band PEQ

● Input/output 2000ms delayer per channel

● Output 512 Tap FIR per channel

● Input each channel voice excitation function (camera tracking), support with PELCO-D, PELCO-P, VISCA protocol, camera control

● 60 preset memory positions

● Support line control box control, Android APP Network Control

● Support archive locking, hide setting parameters, and ensure project technical security



Ordering Code:

DSP-440N2: 4 In 4 out DSP audio processor AFC,AUTOMIX, RS 232 and camera control 

DSP-440ND2: 4 In 4 out DSP audio processor AFC,AUTOMIX, RS 232 and camera control, DANTE Ultimo 4 Channel



ModelDSP-0404ND2
Signal processing 32-bit float point DSP 400Mhz 
Audio system delay < 3ms 
D/A 24-bit 
Sample rate 48KHz 
Analog Audio Inputs and Outputs 
Input channel 4 balanced inputs Mic/line level 
Audio interface 3.81 mm Phoenix plug, 12-pin 
Input impedance 16kΩ
Max. input level 17dBu (5.48Vrms)/Line- 3dBu (0.54Vrms)
/ Mic@20dB Gain gear
Phantom power supply +48VDC, 5.5mA, configured per channel 
Output channel 4 balanced outputs, line level 
Output impedance 150Ω 
Audio Performance Specifications 
Frequency response 20Hz-20kHz (± 0.5dB)/Line, input 0dBu (0.775Vrms)
20Hz-20kHz (± 1.5dB)/Mic, 20dB Gain gear, input
-10dBu (0.245Vrms)
THD+N -90dB(@17dBu,1kHz,A-wt)/Line
-90dB(@-6dBu,1kHz,A-wt)/Mic, 20dB Gain
SNR 110dB(@17dBu,1kHz,A-wt)/Line
100dB(@-6dBu,1kHz,A-wt)/Mic, 20dB Gain
Connection and Display 
USB Type-B 2.0, no drive 
RS232 Serial port communication 
TCP/IP RJ-45 
Indicator light Link,+48V, input/output audio signal
Electrical and Physical Parameters 
Power supply 90V-264V AC 50-60 Hz 
Operation temperature -20℃-80℃ 
Dimension 483mm*265mm*44.5mm 
Weight 3.3kg 


MetInfo enterprise content manager system | MetInfo CMSDSP-440N2,DSP-440ND2.pdf