The hand-held XL2 Analyzer is a powerful Sound Level Meter, a professional Acoustic Analyzer, a precision Audio Analyzer and a comprehensive Vibration Meter in one instrument. Easy operation and countless applications distinguish this quality Swiss product.
The XL2 Sound Level Meter is available in stock, allowing for expedited delivery.
Sound Level Meter
Spectrum Analyzer
STIPA Analyzer
Audio Analyzer
Vibration Meter
Reliable measurement solution
Flexible user interface
Extensive range of measurement functions
The XL2 as a Sound Level Meter
Built for collaboration
Numerous measurement variations are simultaneously available. Actual level (live), Lmin, Lmax, Leq and Lpeak may be measured in combination with frequency weighting A, C or Z and time weightings fast, slow and impulse. All results are simultaneously available and may be stored automatically for later documentation.
Customers may log all acquired level information onto a removable SD card. Additionally the XL2 offers wav-file recording for a complete documentation of the measured sound pressure levels. Voice notes may also be added to each measurement.
Clock-impulse maximum level “TaktMax” in accordance with DIN 45645-1 (optional)
Logging and Reporting
All levels simultaneously
Short-time levels including spectrum for 1 second or longer
Wav-file for listening (compressed)
Data logging in 100 ms intervals (optional)
Linear wav-files with 24 bit, 48 kHz resolution (optional)
Remote measurement
Remote measurement acquisition (optional)
The XL2 as a Real Time Analyzer RTA
The RTA perfectly suits tasks such as optimization of sound systems and rooms. The XL2 measures and logs wideband values and the real time spectrum in 1/1 or 1/3 octave-band resolution according to IEC 61260 class 0. The sound level meter results of the wideband and RTA spectrum are simultaneously available.
Real Time Analyzer Features
1/3 octave, 1/1 octave
Frequency weighting: A, C, Z (=flat)
Time weighting: Fast, slow and optional impulse
Percentile statistics for Lxy (x= A, C or Z, y= F or S ): 1 – 99% (optional)
5 reasons why the XL2 is the right choice for you
The XL2 Acoustic Analyzer offers numerous measurement functions relevant to your application in one instrument. Thanks to the intuitive operation, you can quickly and easily switch between the different measuring functions.
The intuitive user interface makes operation child’s play without having to study the user manual.
Rugged and ready for tough environments.
All measurement results are stored on a removable SD card as TXT files, which can be further processed externally with a PC or MAC.
The XL2 has many expandable measurement functions. So, if you have other acoustic or audio measurement tasks, it’s likely that the XL2 can help you.
Together with the Type Approval Option, the XL2 is an approved Sound Level Meter.
Data Analysis and Reporting
The XL2 stores all data onto the SD card for direct transfer to the computer. Data reports and log files are stored in plain text format, which can be opened with any text editor (Notepad, Wordpad, etc). The data is tab-delimited, so dropping the .txt file into a spreadsheet application will conveniently show the results in columns. The sound level meter may additionaly record the audio data as a WAV-file.
A series of free MS Excel application templates provide a convenient way to view the measurement results of specific tasks and create simple reports.
Data Explorer: Professional solution for a comprehensive analysis of logged noise monitoring data. The data import into the software is enabled by the Data Explorer Option or the annual subscription service Data Explorer 365.
Sound Insulation Reporter: Provides standardized reports for Airborne, Impact and Facade sound insulation measurements. The data import into the software is enabled by the Sound Insulation Option or the annual subscription service Sound Insulation Reporter 365.
Sound Power Reporter: Provides standardized reports for sound power measurements. The data import into the software is enabled by the Sound Power Option or the annual subscription service Sound Power Reporter 365.
Room Acoustics Reporter: For automatically generating reverberation time measurement reports and analyzing the RTA frequency response spectrum. The data import into the software is enabled by the Room Acoustics Option or the annual subscription service Room Acoustics Reporter 365.
The XL2 together with the M2230 Measurement Microphone and the Type Approval Option forms a certified class 1 sound level meter in accordance with the standards IEC 61672-1 and ANSI S1.4.
Measurement Kit
XL2 Sound Level Meter
Type Approval Option for XL2
M2230 Measurement Microphone
Manufacturer Calibration Certificate according to IEC 61672
System Case
Optional
Extended Acoustic Pack for XL2
Data Explorer 365
Remote Measurement Option for XL2
Class 1 Sound Calibrator 94/114 dB
Sound Level Meter with Class 1 Frequency Response
The XL2, together with the M2211 Measurement Microphone, forms a professional sound level meter with class 1 frequency response according to IEC 61672-1 and ANSI S1.4.
Measurement Kit
XL2 Sound Level Meter
M2211 Measurement Microphone
Manufacturer Calibration Certificate according to IEC 61672
System Case
Optional
Extended Acoustic Pack for XL2
Data Explorer 365
Remote Measurement Option for XL2
Class 1 Sound Calibrator 94/114 dB
Sound Level Meter Class 2
The XL2, together with the M4261 Measurement Microphone, forms a professional sound level meter according to IEC 61672 and ANSI S1.4., class 2.
Measurement Kit
XL2 Sound Level Meter
M4261 Measurement Microphone
Manufacturer Calibration Certificate according to IEC 61672
System Case
Optional
Extended Acoustic Pack for XL2
Data Explorer 365
Remote Measurement Option for XL2
Class 2 Sound Calibrator
Applications
Applications
Sound Level Monitoring
Monitor event SPL in real time to meet limits and protect hearing.
How do I ensure accurate XL2 sound level measurements on site?
Use the XL2 with a suitable measurement microphone and perform a quick acoustic calibration with a sound calibrator (typically 94 dB at 1 kHz) before and after the measurement session. This creates traceable results and helps catch setup or microphone issues early.
Does the XL2 support STIPA speech intelligibility testing?
Yes. With the STIPA Option installed, the XL2 measures speech intelligibility according to IEC 60268-16:2020 (and also supports older editions), including features like ambient noise correction and automated averaging.
How do I export XL2 data and create professional reports?
You can transfer XL2 measurement data to a PC and generate professional reports with NTi Data Explorer, which is designed for fast analysis of sound level data and quick creation of customized reports. It automatically includes relevant header information such as measurement date and calibration details for clean documentation.
For building acoustics workflows, you can also export and document key results for SIR (Sound Insulation Reporter) and RAR (Room Acoustics Reporter) applications – making it easy to turn XL2 measurements into standardized, client-ready deliverables.
Trusted by professionals worldwide.
As a research laboratory invested in supporting communities through real time noise monitoring, I am very happy to exclusively use NTi instruments. Not only are the robust, easy to use, and provide high quality data, the customer service is outstanding and their team will work with you to find the most cost effective and appropriate solutions needed for problems ranging from easy to difficult.
Erica D. Walker MSc, ScD, RGSS Assistant Professor of Epidemiology, Brown University School of Public Health
I’ve been using the XL2 for over 15 years for short-term and long-term measurements in all kinds of indoor and outdoor environments all across the country. The meter gets me what I want, when I need it. It’s not only the best value for acoustical measurements, it’s the best tool period. I bet my company and reputation on XL2 results and it has not let me down. You would be crazy not to consider adding NTi instruments to your toolkit.
Herb Singleton, P.E., INCE Bd. Cert., President, Cross-Spectrum Acoustics
We at Constructure GmbH use two XL3 sound level meters for noise monitoring during demolition work. We are very satisfied with these highly user-friendly instruments, the online monitoring in the MeasurEye Cloud, the good advice and qualified support. Factory calibrations at NTi Audio are also handled very smoothly and without complications.
Markus Rost, Managing Director, Constructure GmbH
News about XL2 Audio & Acoustic Analyzer
News & Updates
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July 10, 2025
Introducing Smarter Sound Insulation Measurement with the New “Site View”
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