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Eduard Kruspe is a brass instrument manufacturer located near Eisenach, Germany. It was founded in 1834 by Carl Kruspe and his two sons Eduard and Friedrich (Fritz) in Erfurt, Germany, and few years after German reunification the factory moved from Erfurt to Wutha-Farnroda near Eisenach . The factory in Wutha-Farnroda (Thuringia) closed in 2011. But the manufacture of Kruspe brass wind instruments is continued since 2012 in Prienbach (Bavaria). Ed. Kruspe is credited with building the first prototypes of the double horn in 1897.