With fanned frets (multi-scale fretboard) each string is provided with the optimal scale length (free-vibrating string length). That is, the lower the sound, the more space is needed by the string, with treble notes strings may be correspondingly shorter.
The 8th fret forms the center and is placed in the usual way in a right angle to the fingerboard. From there, the frets are fanned in both directions. The result is a much improved sound, absolutely perfect intonation and a much more pleasant and ergonomic feel.