1: Total volume of reverberation: Echo Vol This knob can control the direct sound of the reverberation echo, that is, the entire reverberation effect is more and less!

2: Total volume of the microphone: MIC VOL this knob can control the volume of all microphones.

Note: There are 3 tube barrel volume control knobs below the total volume of the microphone, which can control the volume of each microphone: MIC1 (microphone 1 volume) MIC2 (microphone 2 volume) MIC3 (microphone 3 volume), try not to adjust separately.

3: Total music volume: Music Vol This knob can control the volume of the computer accompaniment, and adjusting the knob to achieve the sound of the song sound.