Former Telefunken employee who is still producing vacuum tubes up to this day. Dr. Klaus Schaffernicht, who founded the company ELROG 1986 in Lüneburg and moved to the city Lübtheen in Mecklenburg-Vorpommern. Schaffernicht probably is the last manufacturer of audio tubes in Germany. The production of vacuum tubes is not a trivial matter. Unfortunately the know how needed for that is mostly lost. Tube enthusiasts suffered from this when they retubed their beloved equipment with cheaply produced tubes from far east. Therefore the audio scene is lucky to have a company like ELROG which does not the necessary know how only but the production equipment also. Now tubes can be produced again with the quality and performance of the old Telefunken types. When Schaffernicht decided to make audio tubes it was clear to him that he would not just build mere copies of the old General Electric or RCA types.