Mini Stereo 4 Mono 8 Channels Line Microphone Input Output Audio Mixer Console
             Portable Mic / Line In & Out Hub Audio Mixer Mixing Console Combiner
For Electric and Acounstic Guitar Bass Areophone Piano Keyboard Wind Synthesizer Musical Instrument

This is a light mesa mixer using both AC and DC with double 4-channel Mic/Line Stereo or 4-channel Mono Input.
It's quiet suitable for a small office.It's got low noise,high and low impedance circuit design.On every line,it's got 
separated volume control.

When you use 9V battery,please open the bottom cover of the battery with a screw and install the battery with correct 
electrode.You also can use the supplying rectifier.While installing,plug into the 110V~220V AC socket and the other plug into 
the DC 9V put one socket.Turn the power on and the indicator lights.No matter how you use MIC Input or LINE Input,
Turn the Master A or B to the position MIC or LINE and adjust the individual volume in accordance to make it into use.

If you use Line Stereo or Mono input,turn the switch to the position of
STEREO or MONO and turn the MASTER to LINE.