SV 971A

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.

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What is 7+4?

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.

SV 971A

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.

Starter

SV 917A Starter Pack

Our best selling pack. Everything you need to get started

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Advanced

SV 917A Advanced Pack

All the starter pack features, but with a class 1 calibrator

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Professional

SV 917A Professional Pack

Contains an additional SvanPC++ environmental module license

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Reverberation Time

SV 917A Reverberation Time

All the starter pack features, but with RT60 analysis capabilities

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Reverberation Time ++

SV 917A Reverberation Time++ ++

All the features of the RT pack, but includes UKAS calibration

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MOLES 2.0 Kit

SV 971A Moles

Transform your SLM into an environmental meter with MOLES 2.0

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Building Acoustics

Building Acoustics

Measure reverberation time and room performance

Occupational Noise

Occupational Noise

Protect your team and maintain compliance

Environmental Noise

Environmental Noise

Carry out professional outdoor assessments.

Speech Intelligibility

Speech Intelligibility

Assess public spaces and communication systems.

Starter Pack

The starter pack provides everything you need to carry out Class 1 measurements straight out the box. This includes 1/1 and 1/3 octave band analysis, audio recording and a protective carry case.

This is an ideal choice for health & safety professionals, conultant and anyone carrying out routine noise assesments.

SV 971A Starter Pack Icons
Starter Pack SV 971A

Advanced Pack

Building on the starter pack, the advanced pack adds in a Class 1 acoustic calibrator. This allows users to verify meter performance, conduct spot calibrations, and maintain consistency in their measurements.

This is ideal for regular field measurements where calibration verification is required.

SV 971A Advanced Pack Icons
SV 971A Advanced Pack

Professional Pack

This is the complete measurement solution, combining the SV 971A, Class 1 calibrator and an environmental module license for SvanPC++.

Designed for consultants and advanced users, it provides enhanced data analysis, reporting, and environmental noise assessment capabilities

SV 971A Professional Pack Icons
SV 971A Professional Pack

Reverberation Time Pack

Built from the starter pack, this package adds the RT60 reverberation time measurement option, allowing users to assess room acoustics and reverberation performance.

It’s ideal for those carrying out building acoustics testing and room acoustic evaluations.

SV 971A Reverberation Time Pack Icons
SV 971A Reverberation Time Pack

Reverberation Time ++ Pack

This has all the capabilities of the Reverberation Pack, but with included UKAS calibration. It is suited to professionals who require documented calibration as part of their testing procedures.

This is ideal for professional building acoustics surveys where calibrated, traceable measurements are required.

SV 971A Reverberation Time ++ Pack Icons
SV 971A Reverberation Time ++ Pack

MOLES 2.0 Kit

The MOLES 2.0 transforms your 971A into an environmental meter, housed inside a protective case with an internal battery life of up to 4 weeks. There are also external battery options.

it allows for medium to long-term unattended sound monitoring in all conditions. Its lightweight and small design means it is perfect for conducting noise analysis in any location.

SV 971A MOLES 2.0 Icons
SV 971A MOLES 2.0
SV 971A Starter Pack Breakdown
BA Pro App and Assistant Pro App

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.

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Supervisor Software

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…

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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…

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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…

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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…

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