DC IN: Input for 9V DC power supply. (Not included)
EQ setting: Treble, Middle, Bass knobs for perfect equalizer.
Gain knob: Adjusts the amount of distortion.
Volume knob: Adjusts overall volume of distortion.
Mode switch: Mode(I) gives you more detailed mid gain sound and compression. Mode(II) gives you modem high gain and opening sound.
LED: Indicates the effect on/off.
Output jack: 1/4'' mono audio jack, connect to amp or other devices.
Input jack: 1/4'' mono audio jack, connect to the input device or instrument.
Footswitch: Engages and disengages the effect, true bypass.