The Quinta Pitch Machine is more than your standard octave in that it not only gives you notes an octave up and an octave down, but also gives you a fifth up. Each of the three intervals is dialled in proportion with its own knob, and you get a mix knob to blend dry and pitch-shifted sound, this runs from totally dry to totally pitch-shifted. Your Quinta Pitch Machine comes with 4 knobs. Three of these are used to add in the extra notes. The +1 OCTAVE knob adds a note that is 1 octave higher