You can connect your mobile phone to the mixer via the USB port of the mixer The mixer can receive the signal from the mobile phone, and the mobile phone can receive the signal from the mixer. PC playback: You can from the PC to the mixer 4-channel mixer, 88 effects, USB recording and playback, connected to mobile phones and computers Maximum level: Maximum Levels Mic inc: +22dbu All Other inputs: +22dbu All other outputs: +22dbu Total harmonic distortion (): Total harmonic distortion () ( more than 0.03% 20hz-20khz@+4dbu into 600, Input to OMNI OUT) Mic in to insert out: less than 0.005% Noise: Main output (fader at O dB position) STEREO OUT: -88dBu Monitor headphone output (minimum fader) PHONES OUT: 88dBu Main output (minimum fader) STEREO OUT: -100dBu Signal to Noise Ratio Channel line: 78db Microphone input: 81db Monitoring room output: 80db Equivalent input noise(EIN) 150 ohm termination: -129.5dbu 20HZ-20KHZ Attenuation (Crosstalk) Channel Mute switch engaged: -82 dbu Channel Gain knob down:-82 dbu Frequency response microphone Frequency response +0.3db 20 HZ-20KHZ, refer to+4dbu output @lkhz, INPUT to OMNI OUT gain/GAIN Balanced output STEREO OUT: +70dBu Monitor headphones PHONES OUT: +70dBu Common mode rejection ratio: CMRR Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Voltage: AC100-240V colour: white Material: ABS Size: 26x24x8CM Package Contents: 1 x host 1 x EU 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.