This End-User License Agreement ("Agreement") is a legal agreement between you and Phaseburn Music, operated by Pavel Burylichev, an individual entrepreneur registered in Georgia ("we", "us", "our"), for the Phaseburn One software instrument, including its plug-in formats (VST3 and CLAP), embedded presets, artwork and documentation (together, the "Software"). By installing, copying, registering or otherwise using the Software, you agree to be bound by this Agreement; if you do not agree, do not install or use the Software. The purchase of a license is a separate transaction governed by the Terms of Sale, with payment processed by our authorised reseller and Merchant of Record (section 12); this Agreement governs your use of the Software, not the payment transaction. This is the same agreement shown in the installers.
License grant
Subject to your compliance with this Agreement, we grant you a perpetual, worldwide, non-exclusive, non-transferable license to install and use the Software as a single user (one natural person) on up to three (3) computers you own or control at the same time, activated and managed through the license activation system described in section 2. You may deactivate a machine at any time to free its slot. Any lawful purpose is covered, including commercial music production. Audio recordings and musical works you create using the Software are yours — we claim no rights in your output and require no attribution.
License delivery, registration and privacy
The Software is distributed as a single build. A valid license unlocks the full version and is delivered as a license key sent to your email address. Activation is a one-time step per machine: when you enter your key, the Software makes a single, user-initiated request to our activation service, sending the key together with a one-way machine fingerprint (a hash that cannot be reversed into your hardware details); the service returns a signed license file bound to that machine. Machines without an internet connection can be activated from any browser via a machine code on the self-service license page, where you can also view, rename and deactivate your machines. The fingerprint and a machine name are stored with your license to enforce the three-machine limit, as described in the Privacy Policy.
After activation, the Software verifies the license entirely offline against a cryptographic key embedded in the build. It does not require an account, does not require an internet connection to run, and — apart from the activation request above — does not transmit any information from your computer to us or to any third party. It contains no telemetry, analytics or "phone-home" mechanism, and an activated machine keeps working without any network connection, through updates, even if our servers are unavailable (a server outage only prevents new activations). Your license file contains your email address, embedded so your copy is identifiable to you and displayed within the Software; your license is personal to you, and you are responsible for keeping your license file and key confidential.
Beta and demo
There is a single distributed build with three modes of operation:
- Registered — with a valid license, the Software runs with full functionality and no time limit.
- Beta (free) — before October 15, 2026, an unregistered build is fully functional and free to use.
- Demo — on and after October 15, 2026, an unregistered build continues to run in a reduced demo mode (a brief, periodic audio interruption) rather than ceasing to function. A license may be registered at any time — including during the beta — to remove that limitation.
The dates and behaviour above may change. Beta and demo builds are pre-release and evaluation software provided strictly "as is", with no warranties and no guarantees of any kind, including as to stability, fitness or continued availability; we may modify, suspend or discontinue any beta or demo functionality at any time. Any beta-program benefits — for example complimentary licenses for selected participants, or the acceptance and crediting of user-submitted presets as factory content — are offered entirely at our sole discretion, create no obligation on us, and are described separately in the beta terms on /download.
Restrictions
Except as expressly permitted by this Agreement or by applicable law notwithstanding this Agreement, you may not:
- redistribute, publish, sell, rent, lease, lend, sublicense or otherwise make the Software or your license key available to any third party;
- share your license key or use a single-user license for more than one person;
- reverse-engineer, decompile or disassemble the Software, except to the extent this restriction is expressly prohibited by applicable law (for example, where necessary for interoperability);
- remove, alter or circumvent any proprietary notice, license mechanism or credit in the Software.
Ownership, Intellectual Property & Independence
The Software is licensed, not sold. We (and our licensors) retain all right, title and interest in and to the Software, including its source code, DSP engine, presets, artwork and documentation, and all intellectual-property rights therein. No rights are granted to you except as expressly set out in this Agreement. Third-party components and technique attributions are set out in the THIRD-PARTY-LICENSES notice distributed with the Software. This clause is central to what Phaseburn One is, so it gets its own panel:
1. Original, independent work
Phaseburn One is an original, independent software instrument. Its engine implements published, peer-reviewed DSP techniques freely available in the open literature together with original algorithms of our own. It does not emulate, model, sample, recreate or reproduce any specific commercial hardware or software instrument, and it is not a port or derivative of any third party’s product.
2. Trademarks
“Phaseburn Music” and “Phaseburn ONE” are marks of the Licensor. All other product names, brands and trademarks are the property of their respective owners; any reference to them is descriptive only and implies no affiliation, sponsorship or endorsement. VST is a registered trademark of Steinberg Media Technologies GmbH, registered in Europe and other countries.
3. Techniques and attributions
The techniques and ideas the engine builds on, with credit where it is due:
- Vector phase shaping — Kleimola, Lazzarini, Timoney & Välimäki, 2011
- Zero-delay-feedback / TPT filters — after Zavalishin, “The Art of VA Filter Design”
- Nonlinear ladder filter — after D’Angelo & Välimäki, IEEE 2014
- Antiderivative anti-aliasing (ADAA) — Parker, Zavalishin & Le Bivic, 2016
- Hadamard feedback-delay-network reverb — Jot / Stautner–Puckette lineage
- Single-sideband frequency shifting — classic Bode frequency-shifter technique
- Probability-sequencer concept — based on ideas by Alexey Kurkin (Parasense)
Attribution of a published technique does not imply the authors’ endorsement of this product.
4. No affiliation
Phaseburn Music is an independent developer. It is not affiliated with, sponsored by or endorsed by any other hardware or software manufacturer.
Disclaimer of warranties
To the maximum extent permitted by applicable law, the Software is provided "as is" and "as available", with all faults and without warranty of any kind. We disclaim all warranties, whether express, implied, statutory or otherwise, including any implied warranties of merchantability, fitness for a particular purpose, title and non-infringement. We do not warrant that the Software will be uninterrupted, error-free or secure, that defects will be corrected, or that it will be compatible with any particular hardware, operating system or host application. Some jurisdictions do not allow the exclusion of certain warranties: nothing in this Agreement excludes or limits any warranty or right that cannot be excluded or limited under the law applicable to you, including the statutory rights of consumers.
Limitation of liability
To the maximum extent permitted by applicable law, in no event will we be liable for any indirect, incidental, special, consequential, exemplary or punitive damages, or for any loss of profits, revenue, data, goodwill or business, or for damage to or loss of audio equipment or hearing, arising out of or relating to the Software or this Agreement, however caused and on any theory of liability, even if we have been advised of the possibility of such damages. Our total aggregate liability will not exceed the amount you actually paid for the license (or, if you obtained the Software free of charge, zero). Nothing in this Agreement excludes or limits our liability for death or personal injury caused by our negligence, for fraud or fraudulent misrepresentation, or for any other liability that cannot be excluded under applicable law; where liability cannot be wholly excluded, it is limited to the minimum the law permits.
Warning: the Software can produce loud, wide-dynamic-range audio. Use appropriate monitoring levels and hearing protection — you are solely responsible for protecting your equipment and hearing.
Term and termination
This Agreement is effective until terminated. It terminates automatically if you materially breach it and fail to cure the breach within 30 days after we give you notice. On termination, you must stop using the Software and delete all copies in your possession or control. Sections that by their nature should survive — including ownership and intellectual property, the warranty disclaimer, the limitation of liability and governing law — survive termination.
Governing law and disputes
This Agreement is governed by the laws of Georgia (the country), without regard to its conflict-of-laws rules, and the competent courts of Georgia have jurisdiction over any dispute arising out of or relating to it. If you are a consumer, the mandatory consumer-protection rules of your country of habitual residence remain applicable to you, and nothing in this section deprives you of the protection of those rules.
Statutory consumer rights
Nothing in this Agreement affects any right you have as a consumer that cannot be waived or limited by contract under applicable law — including, where applicable, the EU right of withdrawal for digital content and the conformity remedies under Directive (EU) 2019/770. See Refunds & Right of Withdrawal.
Changes to this Agreement
We may update this Agreement for future versions or releases of the Software. The version you accepted governs your use of the build you installed under it. The current version is always published on this page.
Purchase and refunds
Licenses are sold through phaseburn.music. Card payments are collected by Paddle, our authorised reseller and Merchant of Record, who is the seller of record for the transaction, appears on your statement, and collects any applicable tax. Refunds and any statutory right of withdrawal are handled as described in the Terms of Sale and the Refunds & Right of Withdrawal policy.
Entire agreement; severability; waiver
This Agreement, together with the Terms of Sale and the policies it references, is the entire agreement between you and us regarding the Software and supersedes any prior understanding. If any provision is held unenforceable, the remaining provisions remain in full force, and the unenforceable provision will be enforced to the maximum extent permitted. Our failure to enforce any provision is not a waiver of it.
Contact
Phaseburn Music — operated by Pavel Burylichev, an individual entrepreneur registered in Georgia, registration no. 305617758. Leo and Nodar Gabunia Street 39, Unit 103, Tbilisi, Georgia. contact@phaseburn.music — please also send a copy of any postal correspondence by email; requests are processed fastest through the contact form or email.