G.R.A.S. Sound & Vibration A/S services

All repairs are made at GRAS Global Repair and Calibration Service (located in Denmark). GRAS Global Repair and Calibration Service is staffed by a team of dedicated and well-trained engineers who have the latest test equipment at their disposal. To GRAS, quality is key.  We, therefore, only use approved and high-quality parts and components in our equipment irrespective of whether the products are new or repaired. Almost all our products are repairable, including microphones for which we can replace the diaphragm, if it has been damaged.

All microphones provided by GRAS are constructed with a stainless steel protection grid and housing as well as a special stainless alloy diaphragm for unmatched durability and longevity. All our high-precision (class 1) measurement microphones are delivered with a 5-year warranty against defective materials and workmanship. This also applies to the diaphragm. When you purchase a GRAS microphone you, therefore, not only purchase the market’s most durable measurement microphone, you also make an investment for the future.

Is uptime, regular calibration intervals and low costs of ownership important parameters for you, then a GRAS maintenance agreement might be the right solution for you. All our maintenance agreements are customized to fulfill your needs. Many customers have a combined agreement consisting of repair service as well as calibration on a regular basis. We also offer calibration administration of your products, including automatic recall of your equipment. If you would like to learn more about our maintenance agreements, please contact our local partner in your area here.

RMA stands for Return Merchandise Authorization and helps GRAS to understand why equipment is shipped back to us and, at the same time, provides you as our customer with a faster response time and more efficient service of your product. All items sent to our Global Repair and Calibration Service must carry an RMA number. When creating an RMA number, you can easily manage orders, check the current status of an RMA order, obtain price estimates as well as automatically get the paperwork done to ship items.

All GRAS microphones are calibrated as an integral part of our quality assurance. This calibration is traceable to the Danish National Metrology Institute, also known as DFM. It is performed by specially-trained GRAS personnel under controlled conditions and according to established procedures and standards. We also offer traceable calibration as an after-sales service. This is the same rigorous calibration that we do in the final stage of our quality assurance for any new piece of equipment. New as well as re-calibrated equipment is delivered with up-to-date calibration information on individual calibration charts or extended calibration certificates stating sensitivity, frequency response and environmental calibration conditions.