Brunhilde (Bruni) Jacob specializes in the construction of new mandolins, mandolas and classical guitars in various sizes. The designs are in-house developments, but are based on traditional designs. She also offers special models (e.g. octave guitar, various acoustic models, mandocello). She qualified as a luthier in Markneukirchen and in 1996 went to work for Ulrike Meinel making zithers and guitars. She started her own workshop in 1998. From 2000 to 2014 she taught luthiery in Klingenthal.