Just keep the mixer balanced, and then please wipe the dust off the mixer, otherwise the fader of the mixer will be very colorful, and the music will not be turned on, that is, (gain), and the music will be turned off, that is, reverberation. When someone sings with a microphone, the digital effect can be adjusted to 18. Personally, 18 is very good, and then what? That's when the condenser needs 48v power supply, otherwise the ordinary McLenkai head will burn out. I wish you a happy new year and hope to help you. Hope to adopt! ! !