SV 971A

Class 1 monitoring in your pocket
The SV 971A Class 1 sound level meter is designed for occupational noise and building acoustics measurements.
Features of the SV 971A
The Smallest Class 1 SLM
The Class 1 meter has been equipped with a new measuring microphone offering a LAeq linear measurement range from 27 to 137 dB (140 dB Peak) in a single range!
The microphone’s improved design ensures even better long-term stability of microphone sensitivity.
The SV 971A uses the new low-power Bluetooth® interface allowing current results to be previewed on a smartphone or tablet as well as controlling measurement with Start/Stop functionality. The Building Acoustics Assistant Application also signals an alarm when set noise limits are exceeded.
Along with the new hardware additions, the SV 971A has been equipped with a new internal program that supports the reverberation time RT 60 measurement and STIPA speech intelligibility measurements, both supported by a mobile application.

Explore our SV 971A Packs
Take your pick from our extensive SV 971A modules, from our best selling starter pack, to our more advanced options. Looking to carry out environmental measurements? Our MOLES kit transforms your handheld SLM into a full prepared environmental noise monitor.

Control Your Meter on Your Mobile
The SV 971A has bluetooth capabilties, allowing it to connect to mobile phones. This allows you to view measurements,
The Assistant pro app enables professionals in occupational safety, environmental monitoring, and engineering to control measurement processes and validate data directly on Android or iOS devices.
The app provides on site data analysis with remote measurement control. Assistant pro also provides SvanNET integration, allowing users to link their meters to online projects.
Health & Safety with Supervisor
The Supervisor software package supports the SV 971A, providing a simple way to organise, analyse and report on noise measurement data.
Measurements are automatically categorised by instrument and date, making results easy to find and review.
Supervisor also includes advanced analysis tools and custom report templates, helping users quickly generate professional noise assessment reports.

Calibrate with the fastest lab in the industry
Whether you need a single calibration or ongoing support for a fleet of instruments, our pricing plans offer flexible options, fast turnaround, and competitive discounts.
Customers can benefit from managed reminders, dedicated support, and savings of up to 24% through our calibration agreements.
Level 1
£285.00
Level 2
£232.50
Level 3
£218.00
And now, with our new calibration portal, you can manage all your instruments in one place. Sort and filter your certificates and get alerts when your meter needs to be calibrated.
Knowledge Hub
SoundCheck 24: What’s New
July 21, 2026
Listen Inc has just launched SoundCheck 24, which introduces a range of new features to help reduce test development time and provide greater flexibility in your electroactoustic testing. From a completely new quick measurement interface to enhanced calibration management and improved data visualisation, SoundCheck 24 helps engineers spend less time…
A Deep Dive Into the SV 971A
July 20, 2026
Most sound level meters are built on the idea of doing one job well. But then what happens when your work isn’t always just one type of job. Acoustic consultants, health & safety managers, occupational hygienists and any job in the management of sound, require a versatile meter. This is…
Small Sensors. Big Impact.
July 9, 2026
On Thursday 16th July at 10:30am, we’ll be hosting a live webinar featuring Airly CEO Wiktor Warchalowski, who will explore how the evolution of air quality monitoring is transforming the way organisations are able to understand and manage their environments. Whether that’s workplace wellbeing or environmental compliance the modern sensors…
In situ Acoustic Testing: Smarter Noise Control & Analysis in the Field
May 12, 2026
On Thursday 4th June at 11am, we’ll be hosting a live webinar with Jared Schmal from Microflown Technologies as the key speaker who will explore how in situ acoustic testing is changing how engineers tackle noise in real-world environments. From product development to field troubleshooting, understanding noise and where it…





























