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If you have a question, feel free to contact us:

GRAS Sound & Vibration A/S
gras@gras.dk | support@gras.dk
+45 4566 4046 | +45 4422 5253

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About us

Founded in 1994 by Danish acoustics pioneer Gunnar Rasmussen, GRAS Sound & Vibration is a worldwide leader in the sound and vibration industry. We develop and manufacture state-of-the-art measurement microphones and related equipment to industries where acoustic measuring accuracy and repeatability is of utmost importance. This includes applications and solutions for customers within the fields of aerospace, automotive, audiology, consumer electronics, and other high-demanding industries.

Our measurement microphones are developed to support critical areas of R&D, QA and production and therefore must undergo the most thorough tests. Using a series of “Highly Accelerated Life Tests”, GRAS microphones are designed to live up to the high quality, durability and accuracy that our customers have come to expect and trust.

GRAS is represented through subsidiaries and distributors in more than 40 countries.

Innovation

At GRAS, we and our customers benefit daily from Mr. Rasmussen’s exceptional understanding of acoustics, physics, electronics and measurement needs. Not only in R&D but throughout the organisation, we are proud to develop, produce and offer the world's best measurement microphones and accessories. And as a family company, now owned and led by the two sons, Per Rasmussen and Peter Wulf-Andersen, we safeguard our heritage and knowledge to help create new opportunities with our customers. We work with everybody with an interest in sound or noise within the fields of aerospace, automotive, audiology, consumer electronics, noise monitoring, building acoustics and telecommunications, metrology, education, consultancy, legislation and system integration.

Quality

When our R&D team develops a measurement microphone, it must undergo the most demanding tests to prove that it deserves to bear the GRAS name. Using a series of “Highly Accelerated Life Tests” we ensure that our microphones live up to the high quality and precision that our customers have come to expect and trust. Our HALT tests actively accelerate the lifetime of a microphone by simulating the handling and use it is exposed to in real life situations.
We bake it, we humidify it, we shake it and we even try to break it, just to make sure that you get the very best measurement results every time. 
Learn more about our microphone HALT testing here.

All our microphones are solely produced in stainless steel and in a quality that allows for a 5 year warranty. Should you by mistake damage the diaphragm on a GRAS microphone, our special technique enables repair at very reasonable price.

GRAS is ISO 9001:2015 and ISO 17025:2015 certified.

Partners

GRAS is represented worldwide in more than 40 countries by subsidiaries and distributors. Whether you are searching for a multi-channel solution or just a replacement microphone for your sound level meter GRAS will help solve your needs.
Click here to see the GRAS partners.