Normally it's a old traditional Turkish instrument called "Topuz" with 3 strings, A great luthier/muscian called Erkan Oğur, invented the 6 string version of it, and this guy you see in the picture(a student of Erkan Oğur) made it with 10 strings, it's soon going to take place in a concert, and he's going to play Vivaldi's Dmaj guitar concerto. I listened the instrument it sounds really great
the tone is orgasmic
Looks kind'a wierd tho... huge neck
Gotta see this instrument 
