Shown here is the classic Mobius Megatar 'ToneWeaver' with fanned frets.
Megatars can be built with Novak fanned frets.
Click on the links below for more information on the origin and concept:
http://en.wikipedia.org/wiki/Fanned_fret_guitars
http://en.wikipedia.org/wiki/Multi-scale_fingerboard
Megatars equipped with fanned frets also have the Buzz Feiton intonation system, making them one of the only stringed instruments in the world that provides the player with both the superior 'in-tune' play of the Feiten system, and the improved tonal color provided by Ralph Novak's fanned-fret system.
With the Novak system, the frets are installed on a slant, such that the lowest bass strings are as long as possible, like a standard bass, and the highest melody strings have a shorter scale length, moving more toward a standard guitar, for a seamless flow of scale length from low/long, to high/short. The instrument looks quite dramatic with all the frets slanting.
But doesn't this make it hard to play?
No.
With your Megatar in the vertical playing position, your hands and fingers naturally line up with the arc of the frets. After a few minutes of getting used to the layout, you won't even notice the difference, and some players find that it feels more natural.