Standard machine cabinet type 1 U height design, black aluminuim oxide draw bench panel. 4 MIC/LINE XLR balanced inputs, providing 48V phantom power switch. 4 AUX accessory unbalanced inputs, there are 2 RCA in each channel, and one of them is on the panel. Each channel is equipped with volume control and tone control. Signal/peak value LED light monitors the input level of every channel. MIC/LINE1,MIC/LINE2 internally installed low cut. Each input channel can be assigned to output channel freely through jumper. The panel provides one channel of MIC/LIN input in addition, parallel connected with MIC/LINE1. MIC1/MIC2 priority control, and adjustable threshold value. 4 XLR balanced outputs, in parallel connection with 2 channels of RCA unbalanced outputs. 4 RJ45 trunk balanced inputs, whose volume is adjustable, and can be mixed correspondingly into 4 channel XLR outputs. 4s of RJ45 trunk balanced outputs mixed signal. Output level indicate. External mute controls all channels.