M6  PRE-AMPLIFIER PROCESSOR1、Adopt double 24-bit, High performance DSP, 48 KHz sampling frequency2、Mic setting  with 16 parameter equalizer. Music input channel setting with 9 parameter equalizer3、Main output channel setting with 9 parameter equalizer4、Subwoofer crossover High pass: 19.7-309Hz; Low pass: 19.7-20.2KHz5、It will automatically enter hot dance mode, after turning off the microphone.6、It support vocals center output (the proportion of echo and direct sound can be adjusted independently) and Post-supplied voice output ( post-volume can be adjusted independently, the maximum delay of 10ms )7、10 modes can be stored , can be changed with storage name and content.8、Built-in administrator mode and customer mode: Customer mode can not store after adjusting parameter.9、Auto lock key ( All the key can not be adjusted except volume)10、This machine is equipped with a full-featured menu, but also through the USB, RS232 connected to the computer.11、Built-in feedback inhibition, strong inhibition of howling, voice excitation function