The LEF-3807 has a straightforward interface which makes it easy to the relevant settings required for your sound output. It features a Dry and a option: Dry controls the volume of the signal sound, whereby Wet controls the volume of the wet signal. The Harmonizer also features a 13 set dial, and each of these a unique shift in pitch, as well as the to go up or down by not just one, two octaves. have also included a three-way toggle switch to go Up, Detune or Down. The combination of these controls along with the individual dials give you a wealth of tones with a range of polyphonic pitches to experiment with. have fitted a true bypass footswitch to the LEF-3807 Pitch Shifter pedal which is constructed using advanced capacitor technology. This not only engages the pedal, switched on if you press down this allows you to switch between the sound and the effect; press down twice and this switches between the fixed mode. If you're creating some cool sound layers then you can the parameters simply by holding down on the footswitch. Another great of this pedal! The Pitch Shifter has a LED status light indicators: The green light signifies the normal mode, whereas the red light denotes a fixed mode. Colour: blue Material: aluminum alloy Size: 9x3.5x3.5cm Package Contents: 1 * Effect Pedal Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.