Peter Siegfried Heffler, born on Jan, 31st 1960 in Reuth, learned the trade of varnishing stringed instruments from his father Konrad Heffler, born on June 4th 1933 in Bereg. In 1945 Konarad Heffler immigrated to Franconia, together with his parents and opened his own business for violin varnishing in 1960. Peter opened his own business for violin making in 1985. This first years, he specialized in the refinement of violin, viola and cello surfaces. Many companies appreciated this know-how, e.g. worldwide known companies such as Hfner and Gill.

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Bit by bit he increasingly began to focus on the making of new instruments. He started regular advanced training courses with the luthier master Alfred Binner who again was educated by Rudolf Buchner and who took over the business in third generation in order to optimize the soundboard of his instruments. The famous cello player Mikhail Utkin from Moscow was so committed to their celli that he plays on an instrument made by Streichinstrumente Stein on his Europe and World Tours and also uses them for his audio recordings. All of them appreciated the outstanding quality, the sound and the simple.