Our story

In 2007 DEC was founded by Mr. Engbert Wilmink to develop Dynamic Sound Technology (DST). DST is patented by DEC and can be used as stand-alone hearing protection or can be embedded in headphone systems, hearing aids and hearables. In 2009 DEC patented and started the production for linear acoustic filters to use in custom earmoulds.
DEC was the first to market linear universal fit hearing protection in 2011 and DEC’s brand Crescendo was launched as a showcase for private label customers

During 2014 we developed and patented impulse filters and the first shipments of this technology as universal hearing protection went to the British Military. The first Acoustic Leakage Tester (ALT) was patented and launched in the following year.
DEC is first to market ‘filtered foam’ in 2016.

Our current location is at the Delft Technoloy Park (Delftechpark). All production tools, testing software and methodology to manufacture with the highest quality levels is developed and created in-house. DEC’s production process is highly flexible and scalable, accompanied by a short lead-time between order and delivery.
We adhere high production and quality standards, e.g. all products are 100% Final Acoustical Tested.

DEC places high importance on R&D activity to stay ahead of its competition, resulting in a strong existing and growing patent portfolio.

Nowadays DEC’s products are available through a worldwide network of OEM-, private label- and distribution partners, serving multiple markets and industries such as PPE, military, motorsports, professional music, leisure and aviation.