Stefan Hahl started learning to make instruments in 1988 at the workshop of master luthier Herman Doderer. He made his first own designed archtop a year later. His apprenticeship included time at Höfner, Hanika and Hopf and by 1994 he had received his diploma from the renowned Violin and Stringed Instrument Making Academy in Mittenwald. Since then Hahl has devoted himself to making high quality classical, dreadnought, archtop and gipsy style guitars in his workshop in Mudershausen, Germany.

Source: Hahl Guitars website (1 September 2017)