Company profile





Product range

Products for professional speech transmission, in particular for use in harsh and noisy environments:

  • Electroacoustic transducers
  • Microphones and speaker microphones
  • Handsets
  • Headsets and headphones
  • Desk intercoms
  • Design-to-order and product applications

Market sectors

  • Aviation
  • Public transport and rail industry
  • Emergency services
  • Control-centre technology and logistics
  • Maritime industry


  • EN 9100 (includes EN ISO 9001)
  • EC directive 94/9/EC for equipment in potentially explosive atmospheres


  • Approved production organisation for aviation equipment in accordance with EASA Annex requirements (Part 21), section A, subpart G of Commission Regulation (EC) No. 748 / 2012
  • Approved maintenance organisation in accordance with EASA Annex II requirements (Part 145), section A of Commission Regulation (EC) No. 1321/2014
  • Development ability for ETSO-Products (Aviation) in accordance with EASA requirements (Part 21), section  A, subpart O of Commission Regulation (EC) No. 748 / 2012, 21A.602B(b)(2)
    • ETSO C50c          Audio Selector Panels and Amplifiers
    • ETSO C57a          Headsets and Speakers
    • ETSO C58a          Aircraft Microphones
    • ETSO C139          Aircraft Audio Systems and Equipment
  • CAGE code: D9240


BDLI (Bundesverband der Deutschen Luft- und Raumfahrtindustrie)

PMeV (Bundesverband Professioneller Mobilfunk e.V.)