[Channel mixer]: equalizer knob for each channel, with 3-band equalizer: volume adjustment for high, medium and low effects. [Monitoring function]: For connecting headphones. This jack supports stereo phone-type plugs. To connect headphones or earbuds with mini plugs, please use a conversion device to connect [Mixer button diagram]: When the red light is on, it means it is working. displays the value of the single channel of the mixer, which is convenient for measuring gain and volume adjustment, and prevents the connection between the mixer and speakers. was burned. [Intelligent compatibility with devices]: Wireless microphone, power amplifier, mobile phone, computer, electronic instrument, wired microphone, audio.Can connect wired/wireless/capacitor microphone, applicable to the family KTV, campus speech, meeting etc. Hign-concerned Chemical:None Model Number:-PA6 Colour:As Shown Material:iron Plug Type: EU Plug, it applies to Indonesia, Germany, France, Spain, Italy and so on. Voltage: AC100-240 Package Contents: 1 * mixer 1 * power cord 1 * English instruction manual 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.