Equalizer is not used by all musical instruments, and it is also called emotional intelligence. There are many effectors and speakers at the front desk. Besides, there are no multiple tracks. Multi-track is a mixer, which is necessary for going out to perform. Eight-terminal input is enough. Belinda's 1000 is very good and convenient.
In addition . Please find me a tens of thousands of watts speaker upstairs. . . That's tens of thousands of times the total power of audio equipment. . . . Not the strength of one person. . . .