The pitchblack Poly features Korg’s revolutionary polyphonic tuning. Simply strum your guitar; the pitchblack Poly will show which strings are in tune and which strings are out of tune, all in a single glance. Tuning with a traditional tuner required checking every string, one at a time including strings that may have been perfectly in tune. Using the pitchblack Poly’s advanced polyphonic tuning, you can quickly see which strings are out of tune and adjust only those strings, saving time and letting you get back to playing quickly! Guitar or bass (up to 6-strings) use is detected automatically, so there's no need to change settings.
Owners Manual; 6F22 - Manganese battery