a compensation for a centuries-old mistake …
The Kritz Intonation Compensation with zero fret, makes the open chords also sound perfectly toned. At every position where the string is pressed, there is a slight increase in tone due to the depression of the string. With the open chords, KIC compensates with a displacement of the zero fret, that lower tone that the unpressed (open) strings have. You no longer hear a difference in purity between the use of open chords at the zero fret and the barré chords.
