Schertler Amps are built by the Schertler Group, which produces acoustic guitar amplification systems, in particular the compact David amp, preamps and DI boxes, and pickup sets.
Schertler is based in Switzerland with production in Italy.
Here is Schertler writing about their company:
“Since its foundation in the early 1980s, Schertler SA has launched a programme of passionate research that aims to achieve the highest levels of accuracy in the reproduction of acoustic stringed instrument sound.
Led by bassist and founder Stephan Schertler, the research and development company initially began to focus on producing high quality tools and innovative technology to replace the technology and imperfections of piezo pickups. Over the years, Schertler’s original approach to harnessing acoustic vibrations has resulted in a number of fundamental innovations, some of which have gained international patents, such as the STAT Series of contact microphones.”