Meet the PR0003 and PR0004 AutoArrays

Meet the PR0003 and PR0004 AutoArrays

Meet the PR0003 and PR0004 AutoArrays: precision-engineered 6-microphone arrays for acoustic measurements in vehicle interiors. Choose from two configurations—Cross or AES, and streamline your workflow for audio system tuning, NVH analysis, and interior sound field mapping

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Engineered Performance. Upgrade Smarter.

Engineered Performance. Upgrade Smarter.

It's time to jumpstart your next engineering breakthrough.

Get exclusive discounts through trade-in or bundle offers on GRAS, AP, and imc solutions — built to meet your evolving measurement needs.

 

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New Microphones Launched!

GRAS 40PO Launch

New Microphones Launched!

GRAS proudly introduces two new EQset technology microphones, bringing real value to audio brands and manufacturers:

  • Minimize production downtime
  • Improve product quality
  • Reduce false passes
  • Boost efficiency
Learn more

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- Webinars and MasterClasses with GRAS experts
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- Expert blog posts and industry insights
- ... and more

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Order the new audio analyzer and microphone bundle from AP+GRAS

Order the new audio analyzer and microphone bundle from AP+GRAS

- and get the microphone as a gift!

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Automotive acoustic standards are evolving

Automotive acoustic standards are evolving

Constant improvements in vehicles are pushing boundaries with better audio systems and noise mitigation solutions, and customers have even higher expectations for EVs that push testing even further. Testing needs have passed beyond the capability of traditional ½′′ microphones.
Discover the new one microphone to meet all the needs of in-cabin measurement.

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The Optimal Testing Solution for Your Audio Application

The Optimal Testing Solution for Your Audio Application

Whether your needs are within consumer audio, electronics or hearing aids, we will help you find the best measurement setup. This also covers hearing enhancement devices (or OTC hearing aids) that seem to combine challenges from both consumer audio and hearing aid testing.

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The World´s Thinnest Condenser Microphones

The World´s Thinnest Condenser Microphones

The new Ultra-Thin Precision (UTP) Microphones from GRAS are based on a revolutionizing, patented technology and have been specifically designed for in-situ boundary layer testing when neutral impact and high precision is important. 

Discover the UTP microphones >
New Family of Ear Simulators!

New Family of Ear Simulators!

GRAS covers the full range of test equipment for headphone measurements.

Since the IEC 60318-4 ear simulator (also known as the 711 coupler), GRAS has developed two new compliant/compatible ear simulators for all needs - including for high-frequency and Hi-Res (up to 50 kHz and beyond) measurements.

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Acoustic Sensors for NVH Testing

Acoustic Sensors for NVH Testing

As a world leader in developing cutting-edge acoustic sensors, GRAS provides new and improved microphones for more efficient and reliable acoustic automotive NVH testing.

Explore the new NVH Microphones >

Selected products

A world of famous GRAS quality

GRAS 26AG 1/2'' Insert Voltage Preamplifier with Integrated Connector

GRAS 26AG 1/2'' Insert Voltage Preamplifier with Integrated Connector

Preamplifiers and Sound Calibrators

GRAS 40AF 1/2" Ext. Polarized Free-field Microphone

GRAS 40AF 1/2" Ext. Polarized Free-field Microphone

Externally polarized cartridges (200 V)

GRAS 42AG Multifunction Sound Calibrator, Class 1

GRAS 42AG Multifunction Sound Calibrator, Class 1

Sound calibrator

GRAS 43AG Ear & Cheek Simulator

GRAS 43AG Ear & Cheek Simulator

Ear simulator kits with constant current power (CCP)

GRAS 45BB KEMAR Head & Torso, Non-configured

GRAS 45BB KEMAR Head & Torso, Non-configured

KEMAR, Non-configured

GRAS 45CC Headphone Test Fixture

GRAS 45CC Headphone Test Fixture

For ear- and headphone test

GRAS 46AE 1/2'' CCP Free-field Standard Microphone Set

GRAS 46AE 1/2'' CCP Free-field Standard Microphone Set

Microphone sets with constant current power (CCP)

GRAS 50AI-LP 1/2" CCP Rugged Intensity Probe

GRAS 50AI-LP 1/2" CCP Rugged Intensity Probe

Intensity Probes

67HA 1 m LEMO Hemisphere kit

67HA 1 m LEMO Hemisphere kit

LEMO Hemisphere kit

GRAS RA0045 Externally Polarized Ear Simulator According to IEC 60318-4 (60711)

GRAS RA0045 Externally Polarized Ear Simulator According to IEC 60318-4 (60711)

Externally polarized cartridges (200 V)

Read the latest news

...or read the archive.

14/08-2025

NASA Publishes Acoustic Dataset from STRIVES5 eVTOL Tests

NASA’s STRIVES5 acoustic dataset shines a spotlight on the critical role played by 58 GRAS 67AX groundembedded microphones in capturing high-fidelity eVTOL noise signatures—powering better modeling, regulation, and public acceptance for tomorrow’s urban aircraft.

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05/08-2025

GRAS Releases New Automotive 6-microphone Arrays

The Gold Standard in Automotive Cabin Acoustic Tests
GRAS Sound & Vibration, an Axiometrix Solutions company, is pleased to announce the release of the GRAS PR0003 and PR0004 AutoArrays. These robust, 6-microphone arrays are engineered for precise and repeatable in-cabin acoustic measurements.

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07/04-2025

A new breakthrough in 'Chinese speed'

imc&GRAS warmly congratulates the successful production of CR450 high-speed train prototype

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