The Davidsharfe is the German harp of the High Baroque era, the harp of Bach, Händel, Telemann and all their lesser-known contemporaries.
It can be diatonic (single row) or chromatic (double, never triple) and it usually has braypins (which are explained under 'Gothic harp').
It is my impression that, altough the buzzing of the bray-pins can be 'switched' off, even in the 18th C. these harps were being played with the braypins on rather than off.
Philipp Eisel (Musicus Autodidactus, Erfurth 1738) writes, as a last little paragraph at the end of his chapter about the harp: Can this harp be tuned and used in another way? Yes, if one takes the braypins, which otherwise cause the buzzing, away from the strings, it will yield a homogenous lute-sound.
My Davidsharfe was made in 2008 by Claus Hüttel and is an almost-copy of a harp which Johann Volckman Rabe made in Nordhausen (Thuringia) in 1743. The original harp is in Carl Claudius' Samling in Copenhagen and has a king David buste on top of the column. The scroll on top of my harp was copied from another Davidsharfe which is in the music instrument museum in Berlin. This Berlin harp is somewhat smaller than the Rabe harp, and is unsigned. It might have been made by a son of Rabe, but it could just as well be a little bit older.