What Spectral Measurement does

Spectral Measurement is a UK-based audio test and measurement company that designs and manufactures precision instruments for evaluating audio and electroacoustic devices. Founded in 1987 as Prism Sound, the company was spun off in 2019 and rebranded as Spectral Measurement to focus exclusively on its test and measurement business, separating it from the professional audio recording operations retained under the Prism Sound name. The company is headquartered in Ely, UK, is privately held by founders Graham Boswell and Ian Dennis, and operates with a small team of 11–50 employees.

The company's core product is the dScope platform, including the dScope Series III and the dScope M1 audio analyzer. These are software-defined instruments that pair hardware I/O with PC-based analysis engines supporting FFT analysis, swept sine measurements, multi-tone testing, and automated pass/fail sequencing for production-line and R&D use cases. Spectral Measurement also distributes TTC (Two-Third-Octave) and PTC (Polar) acoustic test chambers through its partnership with Hill Acoustics, providing integrated electroacoustic test solutions for devices such as smartphones, headsets, hearables, automotive audio systems, and smart speakers. Hardware units are priced between $3,264 and $6,995 at entry, with chamber and full-system configurations priced substantially higher.

The company sells to OEMs, Tier-1 suppliers, and engineering labs across consumer electronics, automotive, professional audio, and broadcasting. Named customers include Microsoft, Apple, Jabil, Harman-Becker, BOSE, Alpine, Bosch, Allen & Heath, and the BBC. The business model combines perpetual hardware licenses with software subscriptions and annual support agreements, augmented by chamber sales through channel partners (Hill Acoustics, Zumi Systems) and US representation via Douglas Ordon & Associates. The company has remained bootstrapped with no external funding rounds, operating under founder ownership since its 2019 separation.

Name

Spectral Measurement

Legal name

Prism Media Products Ltd

Website

https://spectralmeasurement.com

Company type

Private

Founded year

2019

Operating status

Operating

Headcount range

11–50 employees

Short description

Spectral Measurement is a UK-based audio test and measurement company that designs software-defined audio analyzers and acoustic test chambers for evaluating consumer electronics, automotive audio, and pro-audio devices. Founded 1987, the company serves OEMs including Microsoft, Apple, and BOSE.

Ownership category

akta.pro rank

Product category

Audio Test and Measurement Equipment

NAICS

Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515)

SIC

Instruments For Meas & Testing Of Electricity & Elec Signals (3825), Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Test & Measurement Equipment (Oscilloscopes, DAQ, signal analyzers, calibration benches) (IMAGAFAC)

Keywords

• Audio test measurement
• Acoustic test chambers
• Electroacoustic measurement
• Audio analyzer software
• Loudspeaker testing chambers

Headquarters

HQ city

Ely

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Hardware audio analyzer sales: Sale of dScope M1 and Series III audio analyzer hardware units. Pricing is modular with base units starting at £3,264 / $4,395 for the M1 and £5,965–£6,995 for the Series III. Additional software options and accessories are sold separately.
2. Software licensing and options: Modular software options that can be added to the M1 base hardware, including advanced FFT detectors, multi-tone generation, scripting, and event manager. The dScope licensing scheme offers unlimited test seats per installation.
3. Acoustic test chamber sales: Sale of TTC, PTC, and Custom Test Chambers for electroacoustic measurements. Distributed worldwide as the authorized partner of Hill Acoustics.
4. Production test automation software: Auto Sequence (code-free automation) and Auto Test SQL (high-volume production) sold as software options with the dScope platform.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels6 records

Core offering

Spectral Measurement designs, manufactures, and sells the dScope audio analyzer platform (dScope M1 and dScope Series III) as software-defined measurement systems for analog and digital audio testing in R&D, verification, and production environments. The company also distributes Hill Acoustics acoustic test chambers — TTC Tetrahedral, PTC Polar, and Custom/MTC Microphone chambers — and supplies companion accessories (VSIO I2S adapter, dS-LPF filter, dSnet I/O switcher) plus Auto Sequence and Auto Test SQL automation software, backed by consultancy and engineering support services.

Product overview

Spectral Measurement offers a unified portfolio of audio test and measurement solutions centered on the dScope audio analyzer platform. The core offering comprises the dScope M1 (modular audio analyzer with four variants: M1, M1E, M1HP, M1D) and the dScope Series III (legacy analyzer). These software-based analyzers operate via host PC with unlimited test seats, supported by optional accessories including the VSIO adapter (I2S/TDM testing), dS-LPF low-pass filter (power amplifier testing), and dSnet I/O Switcher (16:2 channel expansion). For electroacoustic testing, the company offers Hill Acoustics chambers including TTC Tetrahedral Test Chambers (TTC350), PTC Polar Test Chambers (PTC2400/1200/600), and MTC Microphone Test Chambers, all achieving +/-0.25dB repeatability. Software options include Auto Sequence (code-free automation with PDF/Excel reporting) and Auto Test SQL (high-volume production testing with SQL integration). A collaborative ZUMI X HILL platform enables simplified headphone and earphone testing.

Differentiator

Problem solved

Functional benefit

Products and services

• dScope M1 Audio Analyzer Modular analog and digital audio analyzer with THD+N residual as low as -110dB, analog input sampling rate up to 768kHz (>200kHz bandwidth), phantom power 48V/CCP, integrated I2S and GPIO, and software-implemented measurement functionality migrated from dedicated hardware to host PC software. Available in M1, M1E, M1HP (600 Ohm, +28dBu, no phantom power), and M1D (no software options, no external sync) variants.
• dScope Series III Audio Analyzer Legendary audio analyzer supporting THD+N, noise, crosstalk, frequency response, amplitude and distortion sweeps with comprehensive AES/EBU and SPDIF interface analysis including eye-pattern and jitter analysis; THD residual of -103dB and up to 159Vrms input handling. Available in Series III, Series IIIA+, and Series IIIA configurations priced £5,965 to £6,995.
• TTC Tetrahedral Test Chamber Compact tetrahedral-shaped acoustic test chamber for loudspeaker drive unit measurements providing measurement repeatability better than ±0.25dB across 20Hz–20kHz with a standing-wave-free design. Meets IEC 60268-21:2018, IEC 60268-22:2020, and AES73id-2019 standards. Standard TTC350 size available.
• PTC Polar Test Chamber Polar test chamber for accurate and repeatable polar measurements of complete speaker cabinets, drive units, smart speakers, and soundbars. Meets AES56-2008 (r2019) class B standard. Available in three sizes: PTC2400 (2.4m height, 1.0m distance), PTC1200 (1.2m height, 0.5m distance), and PTC600 (0.6m height, 0.25m distance).
• Custom Test Chambers (including MTC Microphone Test Chamber) Custom-built test chamber for microphone and hydrophone measurements delivering repeatable results within 0.5dB (20–20kHz) and controlled environment for accurate wideband frequency response testing. The MTC Microphone Test Chamber is part of this custom chamber offering.
• ZUMI X HILL Headphone Test Platform Collaborative headphone and earphone test platform combining Zumi Systems test hardware and software with Hill Acoustics' TTC chamber technology. Enables factories, design houses, labs, brand owners, and purchasing departments to test, evaluate, and trim headphone and earphone products easily and repeatably; covers Bluetooth headset testing, ANC headphone testing, battery life, and driver measurements.
• VSIO Adapter Adapter for testing devices with serial audio multiplex interfaces such as I2S, supporting TDM up to 16 channels with separate input/output clocking and I2C control message support for board-level component testing of A-D and D-A converters.
• dS-LPF Low Pass Filter Passive 20kHz low-pass filter accessory for measuring digital and switch-mode power amplifiers by removing high-frequency switching components before measurement.
• dSnet I/O Switcher 16-into-2 audio signal switcher supporting either analogue or digital (AES3) audio signals for expanded channel capacity in multi-device testing environments.
• Auto Sequence Code-free test automation software for production testing applications under approximately 1,000 units/month, with PDF and Excel reporting capabilities for pass/fail documentation.
• Auto Test SQL SQL-based test automation software for high-throughput production line applications over 1,000 units/month, with Microsoft SQL Server database integration and support for barcode scanners and PLC integration.

Quantifiable outcome

• Measurement repeatability better than +/-0.25dB (20Hz-20kHz, 95% confidence level) using TTC chambers vs typical +/-3dB in traditional anechoic chambers
• +3 more outcomes

Named customers20 records

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration12 records

AI capability3 records

Feature8 records

Partnerships

Four partnerships are on record, tiered flagship and core.

• Zumi SystemsflagshipStrategic or Co-development Partner · 1 January 2022Zumi Systems and Hill Acoustics, represented by Spectral Measurement, collaborate on the ZUMI X HILL platform — a complete headphone test solution. The platform combines Zumi's test hardware and software with Hill Acoustics' TTC chamber to enable factories, design houses, labs, brand owners, and purchasing departments to test, evaluate, and trim headphone and earphone products easily and repeatably. The platform covers Bluetooth headset testing, ANC headphone testing, battery life, and driver measurements.
• Hill AcousticscoreChannel Partner/ Reseller/ Distributor · 1 January 2019In 2019, Spectral Measurement became the worldwide distributor for Hill Acoustics test chambers, including the Tetrahedral Test Chambers (TTC), Polar Test Chambers (PTC), and Microphone Test Chambers. The partnership enables end-to-end electroacoustic measurement solutions combining dScope analyzers with Hill Acoustics chambers. The chambers meet IEC 60268-21:2018, IEC 60268-22:2020, and AES73id-2019 standards and are in use at Microsoft, Apple, Jabil, and other leading technology companies.
• SADiEcoreTechnology or Integration · 1 January 2008Prism Sound acquired SADiE on April 1, 2008. SADiE was the world's first non-destructive computer-based audio editor, working on an Edit Decision List. SADiE continues as a leading professional audio workstation and is the preferred choice for craft editing at BBC Radio. The software integrates with Prism Sound A/D and D/A converters. SADiE was later part of the Audio Squadron group alongside Prism Sound's Music division.
• Douglas Ordon & AssociatescoreChannel Partner/ Reseller/ DistributorDouglas Ordon & Associates serves as the US National Sales Representative for Spectral Measurement, providing local sales, support, and contact management for the US market. Located in Fort Worth, TX, they represent Spectral Measurement for all US sales inquiries.

Scale indicators3 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• NTi Audio: Swiss manufacturer of XL2 audio analyzers and Flexus/Faust acoustic test systems; directly competes in handheld and benchtop audio/acoustic measurement for production and broadcast use cases.
• HEAD acoustics: Specialist in telecom/voice/audio quality measurement (ACQUA platform) and acoustic test, including head-and-torso simulators; overlaps with dScope + MTC for microphone and communications-audio testing.
• Brüel & Kjær (HBK): World leader in acoustic measurement instrumentation and anechoic/radio chambers; competes with Hill Acoustics chambers and with dScope on integrated acoustic test for loudspeakers, microphones, and NVH.
• Audio Precision: Direct competitor in audio analyzers (APx series) for R&D and production test of consumer, automotive, and pro-audio devices; competes head-to-head with dScope at many of the same OEM customers.
• Klippel GmbH: Developer of Klippel Analyzer systems for loudspeaker R&D and QC including near-field scanning; competes with the dScope + TTC/PTC combination for transducer and system-level electroacoustic test.
• Listen Inc. Vendor of SoundCheck audio test software and associated interfaces for speaker, headphone, microphone, and smart-device production test; competes with dScope + Auto Test SQL in production-line applications.

Emerging players

• DRA Laboratories: Niche vendor of MLSSA and related acoustical/electroacoustic measurement platforms; smaller direct competitor in transducer and room acoustic analysis.

Others

• Zumi Systems: Strategic partner on the ZUMI × HILL headphone test platform combining Zumi's test hardware/software with Hill Acoustics' TTC chambers; adjacent ecosystem participant that extends Spectral Measurement's reach into headphone/earphone production test.

Broad incumbents

• Keysight Technologies: Major general T&M vendor covering RF, digital, and audio signal analysis; competes broadly in high-end characterisation of audio ADCs/DACs/SoCs used by semiconductor customers that also evaluate dScope.
• Rohde & Schwarz: Large general-purpose T&M manufacturer with dedicated audio analyzer lines (e.g., UPV) plus extensive broadcast and EMC test portfolios; competes on broader procurement and full A/V test benches.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/WeAreSpectralTM
• Facebookfacebook.com/SpectralMeasurement
• LinkedInlinkedin.com/company/spectralmeasurement

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Spectral Measurement