The Pitch controls are infinitely adjustable between unison and +1/-1 octave making it possible to create all kinds of interesting harmonies and special effects. Connecting a standard expression pedal to the “Tender Octaver Pro” expands on this and opens up the possibility of real time pitch shifting.As if this wasn’t enough we have added a smooth control for automatic ambient volume swells.This is all put together into one of our twin series pedals with stereo outputs and 4 storable user presets which can be easily scrolled through live using the dedicated footswitch.