2 channel signal input channel stereo input. One main channel output,one AUX output and feed back. channel for recording output and monitor Low-noise,high-precision microphone preamplifier with perfect sound quality. Balanced XLR microphone input and balanced line inputs,3-band channel EQ 48V DC phantom power will responsible for connect with condenser mic,and power supply for input port Port for eqrphone monitor. Precision logarithmic double 10 LED level display MP3 module,USB interface,and display. Built-in switching power supoly is flexible(AC100-240V AC),low power consumption Totai Harmonic Distortion: 0.1% Frequency Response: 20Hz~20KHz/0.5dB S Ratio: -80dB MAX Outputs: 4V/MAX Input/Output impedance: MIC: 2.4K Mono: 11K Stereo: 100K Parametric EQ: HI: 12KHz15dB LOW: 80Hz/15dB Plug Type: EU Plug,it applies to Indonesia, Germany, France, , Italy and so on voltage: AC100-240V Material: ABS colour: Black Package Contents: 1 x Mixer 1 x USB power cord 1 cord plug Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.