1. 4/6/8/12 mono microphone inpu. 

2. Provides high quality +48V phantom power. 

3. Each channel has high, medium and low balance adjustment, optimizes music performance.    and adjusts indoor vocal parameters. 

4. Each channel is equipped with 1 Auxiliary senders for monitor/effect switchable pre/post faders. 

5. Built-in 16 or 99 digital effects, including reverb, chorus, delay, transposition,multi-effects, beat function. 

6. Built-in quality MP3 player (U-DISK MP3 input). 

7. All channels have peak signal indication and pre-fader monitor selection. 

8. Independent Headphone Monitor and Level Display System.

wire mic:

1. open Receiving ，turn on the hand microphone ， automatically sweep the frequency，upper frequency point, there is no need to match the frequency. 2, change the frequency point is to open the button inside the battery tube to select the frequency change point, total of 30 points can be selected, the frequency will be automatically swept to the receiver.

3. If you drag two, each hand microphone can be converted to A or B channel by pressing and holding for about 6 seconds. The A and B channels each have 30 frequency points.

4．the use of multiple sets of machines: first open a receiver. Press the button inside of the battery tube, and then press the hand microphone power button to hold on , after 8 seconds ,The display shows a horizontal line and then connect the receiver. When there is a sound, it will lock the reception on one side. Other hand microphones will Can't enter. The same operation on the other side. After the receiving and transmitting are locked, all are turned off. Open another set,the  same operation ,and then can be locked. The multiple sets of machines can be used at the same time, but the same frequency point cannot be used during use. The same frequency points will also interfere.