Power Switch: A toggle switch at the top to turn the unit ON or OFF.
Treble: Controls the high frequencies (crispness of cymbals).
Middle: Controls the mid-range frequencies (body of the drums).
Bass: Controls the low-end frequencies (punch of the kick drum).
Volume Controls
Aux Volume: Adjusts the volume of a connected phone, tablet, or backing track.
Drum Volume: Adjusts the main volume of your electronic drum kit.