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

Our customers operate in the following sectors:

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


We are certified according to:

  • EN 9100 (includes EN ISO 9001
  • EN ISO 14001:2015
  • 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 (German Aerospace Industries Association)

PMeV (Network for Secure Communications Association)