1Low noise, high accurate microphone preamplifier with perfect sound quality. 21 set of main channel output, 1 set of auxiliary channel output and return interface. 3Balanced microphone XLR input and balanced line TRS input, 3-band channel equalization. 448V power supply, providing polarization voltage for input port and convenient connection of condenser microphone. 5External switching power supply (AC100-240V AC) is flexible and has low power consumption.Features:2-channel signal input and 1 stereo signal input. 1 set of main channel output, 1 set of auxiliary channel output and return interface. 1 independent recording output and listening port. Low noise, high accurate microphone preamplifier with perfect sound quality. Balanced microphone XLR input and balanced line TRS input, 3-band channel equalization. 60mm fader, feels lubricated and durable. 48V power supply, providing polarization voltage for input port and convenient connection of condenser microphone. Headphone monitor interface. Accurate logarithmic dual 10-bit LED level display. MP3 player module (USB interface). External switching power supply (AC100-240V AC) is flexible and has low power consumption. Specification:Inputs Sensitivity MIC:-36dB LINE:-10dB Eff Ret :-12dB Tape In :-26dBEffects:ECHO 12ms-200msOutput Voltage:4V MaximumS/N Ratio:>85dBLess Than (THD):0.03%(1KHz Full Power)Frequency Response: 20Hz~20KHz3dBHeadphone Output: 7V 220Power Consumption: 25WPlug:US PlugVoltage:110~240VPackage List:1 x Mixer1 x Users Manual1 x Plug 1 x Power SupplyNote:Please kindly make a note if you need any plug adapter.