Kala instruments are designed and constructed to have the best intonation possible. This is achieved by attaching the bridge to the instrument’s top so that the peak of saddle to the 12th fret is exactly half the distance from the 12th fret to the inside edge of the nut. If your instrument’s intonation sounds off, here are just a few factors that may be affecting it: string height, string gauge, string material, string windings, age of strings, finger pressure, wound "C” string vs. unwound “C” string, fret shape (flat vs. peaked), etc. We have found that simply swapping out a string with questionable intonation usually fixes the issue. It is also common for a player to literally squeeze the note out of tune, particularly on U-Basses and soprano & concert ukuleles as the string tension is extremely light.