Purifi Audio
Purifi Audio is a Roskilde, Denmark-based audio technology company that designs and sells ultra-low distortion Class D amplifier modules (EIGENTAKT) and loudspeaker drivers (USHINDI) to premium audio OEMs and DIY audiophiles.
- Company typePrivate
- Founded2014
- HeadquartersRoskilde, Denmark
- Headcount1–10
- GTM typeB2B
- OfferingHardware or Manufacturing
What Purifi Audio does
Purifi Audio is a Danish audio-technology company headquartered in Roskilde that designs ultra-low distortion Class D amplifier modules and loudspeaker transducer drivers for the premium and high-end audio market. The company's core intellectual property is organized under two technology brands: EIGENTAKT, a patented self-oscillating amplifier topology claimed to deliver more than ten times better error attenuation than the nearest competitor (with flagship modules reaching THD+N below 0.00006% and dynamic range above 140dB(A)), and USHINDI, an ultra-low distortion transducer platform that addresses Force Factor Modulation and Surround Radiation Distortion — distortion mechanisms the company says it identified and modeled for the first time. Products are sold under the 1ET (amplifier modules), PTT (transducers), EVAL (evaluation kits), FE (frontend boards), and SPK (speaker kits) families, manufactured in Denmark, and priced in DKK/EUR.
The company operates a dual go-to-market: a direct-to-consumer e-commerce storefront serving DIY audiophiles with evaluation kits, modules, drivers, and complete speaker kits, and an OEM channel supplying amplifier modules and transducer drivers to premium audio brands including Marantz (Sound United), T+A elektroakustik, Lyngdorf Audio, Robson Acoustics, Radiant Acoustics, Oephi Acoustics, and Present Day Production. Revenue is generated through hardware sales of OEM components and direct unit sales, with technology effectively licensed to OEM partners via component supply. The company is privately held (Purifi Audio ApS) with no disclosed funding rounds; co-founders Bruno Putzeys, Lars Risbo, and Peter Lyngdorf anchor the business with deep Class D and high-end audio industry pedigrees (Putzeys: UcD/Ncore inventor; Risbo: TI Fellow, former Toccata Technology founder; Lyngdorf: owner of DALI, Lyngdorf, Steinway Lyngdorf, and Hi Fi Klubben).
Purifi Audio firmographics
Firmographics- Name
- Purifi Audio
- Legal name
- PURIFI AUDIO ApS
- Website
- https://purifi-audio.com
- Company type
- Private
- Founded year
- 2014
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Purifi Audio is a Roskilde, Denmark-based audio technology company that designs and sells ultra-low distortion Class D amplifier modules (EIGENTAKT) and loudspeaker drivers (USHINDI) to premium audio OEMs and DIY audiophiles.
- Ownership category
- akta.pro rank
Purifi Audio industry classification
Industry- Product category
- High-end audio electronics
- NAICS
- Audio and Video Equipment Manufacturing (334310)
- SIC
- Household Audio & Video Equipment (3651)
- akta.pro primary industry
- Hi‑Fi / Audiophile Components (DACs, Amps, Turntables, Streamers) (CRACANAI)
Keywords
Where Purifi Audio is headquartered
LocationHeadquarters
- HQ city
- Roskilde
- HQ country
- Denmark
- HQ region
- Europe
Offices2 records
Markets served
Purifi Audio business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Technology or R&D, Personnel, Supply Chain, Operations
Revenue model
- Hardware Sales - Amplifier Modules: Sale of Class D amplifier modules including 1ET400A, 1ET6525SA, 1ET7040SA, and 1ET9040BA. These are single-channel ultra-high-performance analog-input Class D amplifier modules sold directly to OEM customers and DIY audiophiles.
- Hardware Sales - Transducer Drivers: Sale of loudspeaker transducer drivers including woofers, midrange drivers, tweeters, and passive radiators under the PTT (Purifi Transducer Technology) naming convention. Products range from 4.0-inch to 10.0-inch drivers.
- OEM Components Sales: Sale of OEM transducers and electronics to other audio equipment manufacturers who incorporate PURIFI technology into their branded products. Sold in bulk containers to OEM partners.
- Technology Licensing: Licensing of proprietary EIGENTAKT and USHINDI technologies to premium audio equipment manufacturers including T+A, Marantz, Lyngdorf Audio, and others.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Pay-as-you-go | Amplifier Modules - Entry Level |
| Unit Pricing | Pay-as-you-go | Amplifier Modules - Mid Range |
| Unit Pricing | Pay-as-you-go | Amplifier Modules - High Power |
| Unit Pricing | Pay-as-you-go | Evaluation Kits - Stereo |
| Unit Pricing | Pay-as-you-go | Evaluation Kits - Mono |
| Unit Pricing | Pay-as-you-go | Frontend Boards |
| Unit Pricing | Pay-as-you-go | Passive Radiators |
| Unit Pricing | Pay-as-you-go | Speaker Kits - Reference Design |
| Unit Pricing | Pay-as-you-go | Accessories |
Go-to-market motion2 records
Distribution channels2 records
Marketing channels3 records
Purifi Audio product offering
Product offeringCore offering
Purifi Audio designs, manufactures, and sells ultra-low distortion Class D amplifier modules (EIGENTAKT technology) and loudspeaker transducer drivers (USHINDI technology) for high-end audio applications. The portfolio includes single-channel amplifier modules ranging from 400W to over 1kW, transducer drivers from 1.3-inch to 10-inch sizes, evaluation kits, frontend boards, and complete speaker kits. Products are sold to OEM audio equipment manufacturers and directly to DIY audiophiles.
Product overview
Purifi Audio is a Danish technology company specializing in ultra-low distortion audio amplification and transducer technologies. The company offers a portfolio of Class D amplifier modules (1ET400A, 1ET6525SA, 1ET7040SA, 1ET9040BA) and evaluation kits (EVAL series) under its patented EIGENTAKT technology brand, alongside a comprehensive range of transducers (tweeters, woofers, midrange drivers, extended woofers, passive radiators) in sizes from 1.3" to 10" marketed under the USHINDI brand. The product ecosystem includes frontend boards, cable kits, and the SPK16 Reference Design speaker kit. Products are sold to OEM manufacturers and DIY audio enthusiasts.
Differentiator
Problem solved
Functional benefit
Brands
- EIGENTAKT: Ultra-low distortion amplifier technology trademark
- USHINDI
Products and services
- 1ET400A Amplifier Module Single-channel, ultra-high performance analog-input Class D amplifier module capable of over 400W of power with audio quality that sets the standard for power amplifiers of any operating class. Targeted at OEM audio equipment manufacturers and DIY audiophiles.
- 1ET6525SA Amplifier Module Single-channel ultra-high-performance analog-input Class D amplifier module delivering over 450W, featuring 2nd generation Eigentakt ErrorCorrection with THD+N below 0.0001% (-120dB) at 100W, 4 ohm, and dynamic range exceeding 137dB(A). Targeted at OEM audio equipment manufacturers and DIY audiophiles.
- 1ET7040SA Amplifier Module Single-channel ultra-high performance analog-input Class D amplifier module capable of up to 40A output current at voltage swing up to +/-70V with power rating extending to 950W into 2-ohms. Targeted at OEM audio equipment manufacturers and DIY audiophiles.
- 1ET9040BA Amplifier Module Cutting-edge 2nd generation EIGENTAKT amplifier module with Bridge-tied-load (BTL) power stage providing 90V voltage swing and 40A output current, with output power capability extending well into the kilowatt range. Targeted at OEM audio equipment manufacturers and DIY audiophiles.
- EVAL Series Evaluation Kits Complete evaluation kits (EVAL1-EVAL11) consisting of amplifier modules, frontend boards, and cable sets designed for easy testing and integration in DIY constructions. Includes stereo and mono configurations for different amplifier modules.
- FE Series Frontend Boards Frontend boards (FE02C, FE03-01D, FE07, FE08) providing balanced analog inputs, speaker connectors, gain settings, and voltage regulation for amplifier modules. Available in stereo and mono configurations with various feature levels.
- PTT Transducer Series PURIFI Transducer Technology (PTT) drivers including tweeters (1.3in), woofers, midrange, extended woofers, and passive radiators in sizes from 1.3in to 10in. Available with Black Anodized Aluminum, PP Coated Fiber Paper Mix, or Fiber Paper Mix cone materials. Designed and manufactured in Denmark.
- SPK16 Kit (Stereo) Compact 2-way PURIFI Reference Design passive speaker kit using USHINDI drivers with two 6.5in extended woofers, two tweeters with waveguides, and four passive radiators in force-cancelling configuration. Cabinet not included. Targeted at DIY audiophiles.
- CAB Series Cable Kits Cable kits for connecting evaluation kits to power supplies and speakers, including flat ribbon cables, auxiliary power cables, and speaker cables with various connector options.
Quantifiable outcome
- 10x better error attenuation than nearest competitor with EIGENTAKT amplifier technology
- +3 more outcomes
Companies that use Purifi Audio
Customer profileNamed customers7 records
Segments3 records
Ideal customer profiles2 records
Purifi Audio technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
Purifi Audio partnerships and signals
Strategic signalPartnerships
Five partnerships are on record, tiered core.
- T+A elektroakustikcoreT+A uses PURIFI Eigentakt amplifier technology in their A 200 power amplifier and Symphonia streaming integrated amplifier. T+A describes it as 'the world's leading concept for Class-D amplification' that overcomes limitations of other digital amplifiers including high load dependency, signal distortion, phase noise, and increased harmonic distortion at high power levels.
- Robson AcousticscoreRobson Acoustics launched new line of speakers utilizing PURIFI Ushindi technology bass/mid-drive units in Arabis, Regis, Burlington, and flagship Opus models. PURIFI's cutting-edge technologies play a critical role in enhancing audio performance.
- Radiant AcousticscoreNew Danish speaker brand born from collaboration of Peter Lyngdorf's companies, utilizing PURIFI technology to redefine compact speaker category while maintaining accessible price points. Clarity 6.2 reviewed as 'game-changer in audio industry'.
- Marantz (Sound United)coreMarantz partnered with Purifi to develop the MODEL 10 amplifier. Developed a new amplifier in partnership with Purifi achieving dual-mono operation with astonishingly low 0.05% THD across the audio band at full power and order of magnitude better at half-rated power.
- Lyngdorf AudiocoreLyngdorf Audio uses PURIFI Eigentakt Class D modules in their MXA-8400 multichannel amplifier and Cue-100 speakers. Peter Lyngdorf is a co-founder of PURIFI. The combination of Eigentakt modules with Lyngdorf's PowerPerfect architecture delivers unmatched power, clarity, and musicality.
Scale indicators2 records
Recent moves6 records
Expansion highlights6 records
Purifi Audio competitors and assessment
Company assessmentBroad incumbents
- Texas Instruments: Global semiconductor incumbent with a substantial analog and Class D audio IC portfolio. Purifi co-founder Lars Risbo was a TI Fellow and Audio CTO, and multiple Purifi engineers previously led TI audio programs. TI competes at the chip level that ultimately powers or competes with Purifi modules.
- Dynaudio: Danish premium loudspeaker manufacturer producing finished speakers and OEM driver components. Comparable in premium-driver engineering and Danish audio heritage, and a potential OEM customer/competitor for Purifi's USHINDI transducer business.
Direct peers
- Hypex Electronics: Dutch manufacturer of high-performance Class D amplifier modules (Ncore, UcD) sold to OEM audio brands. The most direct competitor to Purifi's EIGENTAKT line; notably, Ncore and UcD were invented by Purifi co-founder Bruno Putzeys, making the relationship both competitive and genealogical.
- SB Acoustics: Manufacturer of high-end raw speaker drivers and crossover components sold to OEM speaker brands and DIY builders. Comparable to Purifi's USHINDI drivers in product category, target market (high-end OEM and DIY audiophile), and global distribution model.
- Pascal Audio: Danish designer and supplier of ultra-compact Class D amplifier modules for the professional audio OEM market (installed sound, live, cinema). Comparable to Purifi in the OEM Class D module business model, though Pascal skews toward pro-AVC rather than audiophile end products.
- ICE Power (Bang & Olufsen): Subsidiary of Bang & Olufsen producing Class D amplifier modules and ICEpower technology for OEM audio manufacturers. Directly competes with EIGENTAKT in the OEM Class D supply chain and serves an overlapping set of premium hi-fi and professional audio customers.
- Scan-Speak: Danish manufacturer of high-end loudspeaker drivers (woofers, midrange, tweeters) sold to OEM speaker brands and DIY audiophiles. Direct peer to Purifi's USHINDI transducer line in both target customer (premium speaker OEMs) and product category (specialized drive units).
Others
- Powersoft: Italian manufacturer of high-power Class D professional audio amplifiers and OEM amplifier modules. Comparable in Class D technology depth and OEM business model, though Powersoft skews toward touring/installed sound rather than audiophile.
Emerging players
- Mola-Mola: Premium hi-fi electronics brand (DACs, amplifiers) co-founded by Bruno Putzeys using Purifi-adjacent technology. Comparable as a Purifi ecosystem company and a competing end-product brand in the high-end audiophile market, sharing founder DNA and design philosophy.
- Kii Audio: Manufacturer of high-end active loudspeakers using Class D amplification; co-founded by Bruno Putzeys. Adjacent to Purifi's amplifier and transducer technologies at the finished-product level, with overlapping technical DNA but different go-to-market (branded speakers rather than OEM components).
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks5 records
Key highlights6 records
Customer concentration
Purifi Audio social profiles
Digital presencePurifi Audio financial estimates
Financial estimateRevenue estimate
Valuation estimate
Purifi Audio leadership team
Management profileNumber of profiles
Profiles8 records
Purifi Audio funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Purifi Audio M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Purifi Audio
What does Purifi Audio do?
Purifi Audio designs, manufactures, and sells ultra-low distortion Class D amplifier modules (EIGENTAKT technology) and loudspeaker transducer drivers (USHINDI technology) for high-end audio applications. The portfolio includes single-channel amplifier modules ranging from 400W to over 1kW, transducer drivers from 1.3-inch to 10-inch sizes, evaluation kits, frontend boards, and complete speaker kits. Products are sold to OEM audio equipment manufacturers and directly to DIY audiophiles.
Is Purifi Audio a public or private company?
Purifi Audio is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Purifi Audio founded?
Purifi Audio was founded in 2014. It employs 1 to 10 people.
Where is Purifi Audio based?
Purifi Audio is headquartered in Roskilde, Denmark, in the Europe region.
How does Purifi Audio make money?
Four revenue lines are on record. Hardware Sales - Amplifier Modules are the primary driver. The others are hardware Sales - Transducer Drivers, OEM Components Sales and technology Licensing.
Who are Purifi Audio's main competitors?
Broad incumbents on record are Texas Instruments and Dynaudio. Direct peers are Hypex Electronics, SB Acoustics, Pascal Audio, ICE Power (Bang & Olufsen) and Scan-Speak. Powersoft is listed as an others. Emerging players are Mola-Mola and Kii Audio.
Does Purifi Audio have an API?
No public API is recorded for Purifi Audio.
What industry is Purifi Audio in?
Purifi Audio's product category is High-end audio electronics. Its primary akta.pro industry code is CRACANAI, Hi‑Fi / Audiophile Components (DACs, Amps, Turntables, Streamers). Its NAICS code is 334310 and its SIC code is 3651.