MX series MINI Audio Mixer(MX16032FX), it is used to compound, amplify, modify and allocate  the input signal.
Work Electrical LevelMicrophone input: 30dBu
Circuit input: 21dBu
Others input: 22 dBu
Rated output
Main output: +4dBu
Others output: +4 dBu
Max output: 20dBu
Frequency Response
Microphones to main output
+0,-1 dB,100 Resistance
Equalizer
Mono channel equalizer
High frequency: 12KHz
Middle frequency: 100Hz to 8kHz
Low frequency: 80Hz
Stereo Equalizer
High frequency: 12KHz
Middle frequency: 2.5kHz
Low frequency: 80 Hz
Channel: 12 Mono + 2 Stereo
Channel Equalizer: 3 Band
AUX Output:3
Return:1
Effector:24Bit DSP
Main Output:1 Stereo
SUB Output:2
Phantom power:48V DC
USB Player:Optional