The AW-OTB-POLY is a tuner that delivers the precise tuning that all bass players demand, with amazing visibility. It features an organic EL display, which is attracting attention as a next-generation display, providing a wide viewing angle and clear display. In addition, it is equipped with polyphonic tuning, which allows you to strum all strings at once and instantly see which strings are out of tune. The Korg AW-OTG-POLY/AW-OTB-POLY offers all guitarists/bassists a completely new tuning experience.