Behringer Racktuner BTR2000 Ultra-Flexible Auto-Chromatic 2-Channel Tuner

BEHRINGER Rack Tuner BTR2000. You can choose to tune by connecting directly to the BTR2000, using the built-in microphone, or using a reference tone. Chromatic, Guitar, Bass, Baritone, Banjo, Ukulele, Open D, Open E, Open G, Open A, and DADGAD.