Renesongs wrote
Would it be the midi pickup that makes the Pikasso sound a bit like a Koto ?
No, that's the very short scale of the 12-string neck (12 individual strings, rather than 6 courses of two strings, BTW) that has the kotoish tonality. You'll also notice that it's used more like a harp, the short fretless fingerboard isn't used. The MIDI pickup is on the normal 6-string only.
A very interesting instrument. Kind of McLauglin's Shakti acoustic on steroids.