4-channel microphone mixer can handle up to 2 microphones or mono line level signals. The volume of each channel is controlled by a slider and has to give precise control shades high, medium and low, and gain control. A button allows you to turn the power + 48V inputs equipped with XLR. Other features are: phone jack with volume independent management send / return for external effects and adjustable echo command. An MP3 player with display complete this extraordinary device.