The KORG Pitchblack X Pro tuner brings a high level of accuracy, readability and usability to a flexible rackmount format. Designed to work with standard 19" rack cases or to fit on a pedalboard, the Pitchblack X was made for professional musicians and techs in studio or live use. It has Focus mode for greater precision when tuning, and ultrahigh accuracy down to ±0.1 cents. There are input and output jacks on both the front and back to accommodate any setup, a built-in cable tester for easy troubleshooting, multicolored LEDs for improved readability and detachable rack ears with both side and bottom mounts.