Welcome to the rather wacky world of analog octave, ZVex style. The Jonny Octave! This pedal will convert your guitar's output signal to either one octave up or two octaves up, but only under the right circumstances. The controls are, from left to right, Octave 2 Volume and Octave 1 Volume. The two switches are, from left to right, Octave 1/Octave 2 selector switch and True Bypass switch. There are also trim pots on the inside for gain stage control. Turn on the pedal with the right switch and click the left switch until the yellow LED is on. Turn up the volumes for both octaves to the middle. Play a note at the 12th fret and listen for the octave-up sound... compare with the bypassed sound. Now select the red LED and listen to the 2nd Octave up sound, and compare with 1 Octave up. You might try playing double stops or a lower open string with a high (12th fret area) fifth or third harmony on a neighboring string and enjoy the sub-frequencies generated by the ring-mod action. This is most apparent with the one octave setting.* This pedal is HAND PAINTED, as such no two will be EXACTLY alike. Your Hand Painted Jonny Octave may differ from the one pictured. Get your ZVex Effects Hand Painted Jonny Octave Guitar Effect Pedal from Sam Ash Direct today at the guaranteed lowest price from Sam Ash Direct with our 45-day return and 60-day price protection policy.