For more than 20 years, we have been at the forefront of developing measurement microphones, and this knowledge is constantly used to offer you state-of-the-art calibration and service. We are proud of G.R.A.S. being the world leader within service and support of measurement microphones. 

When you buy a G.R.A.S. microphone, you not only buy the market’s most durable measurement microphone, you also make an investment for the future.
Through our worldwide distribution network, we are able to offer you service and calibration almost anywhere. G.R.A.S.’ distributors can help you with complete product solutions and can also offer you accredited calibrations and service.
At G.R.A.S. we offer you a 5-year warranty on all our microphones.
If your microphones are not covered by the warranty, please contact your local G.R.A.S. distributor.


When you purchase a measurement solution from G.R.A.S., you get not only a solution that fulfills your acoustic requirements according to the standards, but also a complete package of support solutions for the entire lifetime of your G.R.A.S. equipment.

Our aim is to keep your maintenance costs of your G.R.A.S. measurement solution as low as possible by offering you 

  • Free product and application support by our partners
  • Repair service
  • Calibration
  • 5 years warranty


Microphone Service Flyer

Acoustic Calibration Equipment Brochure