NTi Audio XL3 Acoustic Analyzer


The NTi Audio XL3 Acoustic Analyzer is a professional acoustic analyzer and sound level meter which is dedicated to room acoustics, noise measurement and building acoustics applications.

The intuitive user interface of the NTi Audio XL3 Acoustic Analyzer is optimized for basic applications of noise monitoring. It also offers comprehensive analysis tools for professionals. Moreover, the XL3 Sound Level Meter is completely networked and therefore makes it possible for you to have operation and data access from any mobile device.

XL3 Acoustic Analyzer in a Glance

  • Class 1 Sound Level Meter
  • Reverberation Time Analyzer
  • Sound Insulation Analyzer
  • Spectrum Analyzer
  • Web Connectivity


  • Touch display
  • Multi-language
  • Integrated web server and file server
  • Single-range measurement
  • 8 hours battery life

Swiss Precision Engineering

The XL3 Sound Level Meter is manufactured based on the latest display technologies and processor, that is why it offers a comfortable user experience. It also offers the following benefits:

  • Precise 96 kHz data sampling in 32-bit resolution
  • Designed for infra and ultra sound measurements: frequency range from 0.3 Hz to 45 kHz

Moreover, with the automated sensor detection which reads the electronic data sheet from the connected measurement microphone, and the single-range measurement, the XL3 Audio and Acoustic Analyzer is indeed analogous to a Swiss Army knife for noise measurement professionals.

nti audio xl3

Smart User Interface

The large 4.3″ IPS color touch display of XL3 Sound Level Meter offers an outstanding resolution of 480 x 800 pixels which makes it possible to have intuitive control of measurement functions in several languages and shows noise level readings in clear and large digits. Also, just as you might do on your smartphone, you can select to have a blue, white or black background theme.

Furthermore, there is an additional haptic keypad which is equipped with eight buttons. It controls the common functions including start/stop for the measurement and power on/off for the NTi Audio XL3 Acoustic Analyzer.

Be Connected

The XL3 Audio and Acoustic Analyzer has an integrated web server and file server which is accessible through the instrument’s inbuilt LAN or WIFI connectivity. Using NTi Connect service, you can simply use your preferred web browser and  connect to the sound level meter. You can control the XL3 Audio and Acoustic Analyzer by an authorized user from anywhere in the world. As another option, you can directly connect to the XL3’s IP address via your local network (for example in building acoustics), the impact sound level measurement can be started from the sending room directly.

In addition, all measurement data can be downloaded easily without interrupting the ongoing measurement. Also, a weather station can be added for logging the prevailing weather conditions. Besides, the online XL3 Audio and Acoustic Analyzer synchronizes automatically to the actual time via the ntp protocol. In fact, this feature together with the optional APIs for controlling the analyzer to retrieve current and historical noise, weather and audio data make the integration into monitoring systems simpler.

Open Data Format

All data of measurement is stored on a removable 32 GB SD card in an an open txt-format which can be downloaded via USB-C. Using larger SD card or an external SSD, you can increase this capacity to terabytes of storage.

NTi Audio XL3 Acoustic Analyzer is optimized for integration into applications of customized noise monitoring: the readings of sound level may be streamed in an efficient binary format. Also, to identify noise sources, the live audio is available online.

Felixtrument supplies a complete range of innovative acoustics, audio and vibration equipment which come in different types and sizes. Therefore, if you are in need of any Sound and Vibration equipment; you may browse through our various products which you may find in the mentioned link; to find the one which best suits your needs.


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