Korg DTR1000 Pro Rack Mount Auto Chromatic Tuner Chromatic tuner that automatically detects the note name and accurate pitch. Seven-semintone flat tuning support. Two types of display: cents or strobe. Adjustable calibration of 438--455 Hz. (Manual/Auto) Dimensions: 18.94(W) x 4.45(D) x 1.81(H) in.