Joson Jet 4 Professional Mixer, 4-Channel Mixing Console and Aux Paths Effects Processor
FEATURES 
4 Channels
99 DSP effects 
Digital Screen Display Effects 
High Headroom Functional 
2 Aux Out 
Bluetooth/USB Input
 
SPECIFICATIONS:
MICROPHONE INPUTS (XENYX MIC PREAMP)
Type: XLR, electronically balanced, discrete input circuit 
 
Mic E.I.N. (20Hz - 20kHz)
@ 0Ω source resistance: -134dB / 135.7dB A-weighted
@ 50Ω source resistance: -131dB/ 133.3dB A-weighted
@ 150Ω source resistance: -129dB / 130.5dB A-weighted
Frequency Response: <10Hz-150kHz (-1dB), <10Hz - 200kHz (-3dB)
Gain Range: +10 to +60dB
Max. input level: +12dBu @ +10dB Gain
Impedance: Approx. 2.6kΩ balanced 
Signal-to-noise ratio: 110dB / 112dB A-weighted; (0dBu in @ +22dB gain)
Distortion (THD+N): 0.005% / 0.004% A-weighted
 
Line input 
Type: 1/4" TRS connector electronically balanced
Impedance: approx. 20kΩ balanced; 10kΩ unbalanced 
Gain range: -10 to +40dB 
Max. input level: 30dB 
 
FADE-OUT ATTENUATION (CROSSTALK ATTENUATION) 
Main fader closed: 90dB 
Channel muted: 89dB
Channel fader closed: 89dB
 
FREQUENCY RESPONSE 
Microphone input to main out
<10Hz - 90kHz: +0dB/-1dB
<10Hz - 160kHz: +0dB/-3dB 
 
Stereo inputs
Type: 1/4" TRS connector, electronically balanced
Impedance: approx. 20kΩ
Max. input level: +22dBu
 
EQ mono channels
Low: 80Hz/±15dB
Mid: 100Hz-8kHz/ ±15dB
High: 12kHz/ ±15dB
 
EQ stereo channels
Low: 80Hz/±15dB
Low Mid: 500Hz/±15dB
High Mid: 3kHz/ ±15dB
High: 12kHz/±15dB
 
Aux sends
Type: 1/4" TS connector, unbalanced
Impedance: Approx. 120Ω
Max. output level: +22dBu 
 
Stereo aux returns
Type: 1/4" TRS connector, electronically balanced
Impedance: approx. 20kΩ bal./ 10KΩ unbal.
Max. input level: +22dBu
 
Main outputs
Type: XLR, electronically balanced and 1/4" TRS balanced
1622FX only: 1/4" TS connector unbalanced
Impedance: approx. 240Ω symm. / 120Ω unbalanced
Max. output level: +28dB; +22dB
 
Control room outputs
Type: 1/4" TS connector unbalanced
Impedance: approx. 120Ω
Max. output level: +22dBu
 
Headphones outputs
Type: 1/4" TRS connector, unbalanced 
Max. output level: +19dBu / 150Ω (+25dBm) 
 
DSP 
Converter: 24-bit Sigma-Delta, 64/128-times oversampling 
Sampling rate: 40kHz 
 
MAIN MIX SYSTEM DATA 
Noise 
Main mix @ -00, Channel fader @ -00: -101dB; -100dB 
Main mix @ 0dB, Channel fader @ -00: -93dB; -96dB; -87dB 
Main mix @ 0dB, Channel fader @ 0dB: -81dB; -83dB; -80dB 
 
POWER SUPPLY
Mains voltage: 230 V—, 50/60 Hz 
Fuse: 230V—: T 5 A H 250V 
Mains connection: Standard IEC receptacle