About us

Our company was founded in 1919 and has been family owned and operated for three generations. From our location in the heart of Berlin, we design and manufacture communications accessories for professionals working in challenging and dangerous environments. The HOLMCO brand is known worldwide for excellent sound quality and reliability.

Holmberg’s product portfolio includes dynamic transducers, microphones, loudspeakers, headsets, and handsets. We are proud to provide customized solutions for specialists in the fields of aviation, rail, shipping, fire fighting, law enforcement, emergency services, logistics, and medical engineering.
Every customer is unique, and we design individual solutions tailored to their specific needs.

As a family business, we strongly believe in open communication, trust, honesty, fairness, loyalty, and cultural diversity.

Image brochure

Aviation brochure

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

Certifications

We are certified according to:

  • EN 9100 (includes DIN EN ISO 9001

  • DIN EN ISO 14001

  • EU directive 2014/23/EU (ATEX) for equipment in potentially explosive atmospheres

Authorizations

  • 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

Registrations

  • CAGE-Code: D9240

Memberships

BDLI (German Aerospace Industries Association) https://www.bdli.de
PMeV (Network for Secure Communications Association) https://www.pmev.de
German control center association https://www.fvlst.de