The CA2 chromatic tuner has a new look with all classic features, and an even wider pitch detection range from A0-C8, ideal for tuning low-register notes. As always, tuning is easy and convenient and the features include a high-precision LCD needle-type meter for stable tuning, calibration from 410-480 Hz to support a variety of concert pitches. Sound Out reference tone from C4-C5, auto power off function and 1/4" input jack.