Overview. The Demant Group is a global market leader in hearing health. We develop, manufacture, and sell products that help people with hearing loss connect and communicate with the world around them. MAICO Diagnostics is headquartered in Berlin Germany with the US business entity part of Diagnostic Group LLC (Demant). For more than 85 years MAICO Diagnostics has been an innovator in audiological screening instruments. We develop intuitive and e...