https://www.prymaxe.com/products/electro-harmonix-nano-pog-polyphonic-octave-generator
The smallest member of the polyphonic POG clan provides impeccable tracking and sound. Separate level controls for dry, sub octave and octave up plus an extra Dry out and silent footswitching provide the perfect formula for this compact jewel.
Electro-Harmonix Nano POG Polyphonic Octave Generator Features:
Super, space saving design
Tracks chords, sweeps or single notes with no hitches or glitches
Great 12-string guitar sound or turn your guitar into a bass
Amazing organ-like sounds
Adjustable original pitch volume, one octave up volume and one octave down volume
Dry output jack in addition to the effect output jack
Silent footswitching and road worthy die-cast package