Korg CA-1 Tuner

With a size similar to an audiocassette case, the KORG CA-1 chromatic tuner tuner supports a broad range of C1 (32.70 Hz)-C8 (4186.01 Hz), allowing speedy and high-precision tuning of wind, string, keyboard, and other instruments. It can play reference pitches from its internal speaker (Sound Out) for tuning by ear and also has an input jack.