Serious low end.
One upper octave and two-sub octaves, plus master control for the dry signal. Three modes: Polyphonic (flawless tracking), Classic (old-school monophonic octaver that will glitch out with complex chords), and Toneprint (using the TC app or editor, you can choose from a wide variety of custom voices and wider parameters).
It's killer even without the Toneprint mode option, and incredibly versatile with it.
You can get great organ tones out of this thing.
Just a great all-around pedal to have in your toolbox.