1968
       PIETTA·LIS founder Helmut Simon (Helmut Simon) established the first sound hand-workshop in Cologne, Germany Hull Mudd hereditary genetic engineering precision machinery, the first one hundred Dilithium Sound from the factory workshops start, only a dozen employees, but its study in depth, even generations in a crossover study, done for each component divider carefully selected.

1995
       PIETTA·LIS first independently developed the first professional speaker, small speakers hidden a huge energy stunning sound structured, clean and compact low frequency, good layering, very fine high-frequency, IF very clear transparent, strong and dynamic 1998 PIETTA·LIS first entertainment special speakers KT series available plant in Cologne, KT series speakers are equipped with the most advanced technology and the speaker unit dividing the finest handmade wooden box, better products to make products that attitude enter the international market will be irreplaceable. In 2002, PIETTA·LIS has not only focused on the research and production of professional entertainment speaker, with its high quality speakers attracted Jeff Rowland, AMC and other famous international brands and their cooperation in electro-acoustic products expanded from a single to a professional production of speakers and speaker wireless microphones PA processors and other peripheral products.

2006
       PIETTA·LIS start for the German government and well-known local television (ZDF, ARD, etc.) to provide entertainment sound engineering services, and with the then widely popular variety show some cooperation (TV Total, Schlag den Raab), from a single audio manufacturers steering complete system of sound engineering service providers. PIETTA·LIS almost harsh insistence on raw material selection and careful school sound R & D, to achieve a virtuous cycle, after decades of rapid development hundred Dilithium sound off now as the world's top entertainment audio brand.

       PIETTA·LIS uphold the essence of German manufacturing process excellence, accurate and balanced sound products, not deliberately exaggerate certain frequencies sought to reflect the true to the sound. Voice pure and simple, transparent and flexible sound, high definition, strong texture known as neutral known for different types of music have a lot of tolerance, after the direction of modern electro-acoustic international community's efforts to develop a number of years, whether PIETTA·LIS existence, people will think of Germany have had such a sound brand, it is faithful to the original, true to quality, originality and heart make quality Yiu shake the world!