Soundtheory Gullfoss
Soundtheory Gullfoss is an intelligent equalizer for mixing and mastering that analyzes audio in real time and adjusts it to improve clarity, detail, spatial…
What Soundtheory Gullfoss is
Soundtheory Gullfoss is an intelligent equalizer for mixing and mastering that analyzes audio in real time and adjusts it to improve clarity, detail, spatiality, and balance. Its computational auditory perception model identifies sound elements competing for attention. It can also address balance issues between elements when the individual tracks are unavailable. The product includes Gullfoss, Gullfoss Live for live mixing and tracking, and Gullfoss Master, which is tuned for mastering. Standard Gullfoss and Master have approximately 20 ms latency; Live is below 2 ms and handles transients differently. Processing supports mono or stereo, M/S-compatible stereo, and sample rates from 16 kHz to 384 kHz. The plug-in supports macOS 10.9 or later and Windows 7 or later, in a 64-bit host that supports AU, VST, VST3, or AAX Native. A Personal license is $199, paid once and covers all three editions. The fully functional 14-day trial requires an iLok account and iLok License Manager.
Good
- Three editions cover mixing, live work, and mastering.
- Can address mix balance without individual tracks.
- Supports AU, VST, VST3, and AAX Native.
- 14-day fully functional trial.
Watch out
- Trial requires an iLok account and License Manager.
- Live and standard editions have different latency.
- Requires a compatible 64-bit host.
Who it suits
Gullfoss may suit musicians and mastering engineers looking for an equalizer for mixing or mastering. The three editions address standard, live, and mastering use cases.
Verdict
Gullfoss offers three versions and broad audio format support, with latency varying by edition. Check host compatibility and the iLok requirement before starting the trial.
Plans and prices
From Soundtheory Gullfoss's own pricing page, checked 7 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Gullfoss | $199, paid once | Personal license · three editions: Gullfoss, Gullfoss Live, Gullfoss Master |
The facts
Each one read from Soundtheory Gullfoss's own pages, with the date it was checked.
What it does
- Audio specifications
- It supports mono or stereo processing, M/S-compatible stereo, and sample rates from 16 kHz to 384 kHz.checked 7 Oct 2026
- Auditory model
- Its real-time analysis uses Soundtheory’s computational auditory perception model to identify audible elements competing for attention.checked 7 Oct 2026
- Editions
- The product includes Gullfoss, Gullfoss Live for live mixing and tracking, and Gullfoss Master tuned for mastering.checked 7 Oct 2026
- Latency
- The standard and Master editions have approximately 20 ms latency; Live has latency below 2 ms and handles transients differently.checked 7 Oct 2026
- License activations
- Soundtheory says an iLok license provides two activations, using dongle, machine, or cloud activation.checked 7 Oct 2026
- License duration
- Licenses purchased from June 16, 2024 are limited to 25 years; licenses purchased before that date are perpetual.checked 7 Oct 2026
- Mix balancing
- Gullfoss can address balance issues between sound elements even when the individual tracks are unavailable.checked 7 Oct 2026
- Privacy
- Soundtheory’s privacy notice says it may collect identity, contact, financial, transaction, technical, profile, usage, and marketing data, and says it does not collect special categories of personal data.checked 7 Oct 2026
- Purpose
- Gullfoss is an intelligent equalizer that analyzes audio and adjusts it to improve clarity, detail, spatiality, and balance.checked 7 Oct 2026
- Supported systems
- The plug-in supports macOS 10.9 or later and Windows 7 or later, and requires a 64-bit host supporting AU, VST, VST3, or AAX Native.checked 7 Oct 2026
- Use cases
- Soundtheory describes Gullfoss as suitable for amateur musicians through professional mastering engineers, and for mixing and mastering applications.checked 7 Oct 2026
The company
- Company
- Soundtheory says it emerged in 2016 after nearly 14 years of research; its listed address is in Summertown, Oxford, United Kingdom.checked 7 Oct 2026
- Founded
- 2016checked 28 Sep 2026
- Headquarters
- 5 South Parade, Summertown, Oxford OX2 7JL, United Kingdomchecked 28 Sep 2026
Money
- Trial
- The fully functional trial lasts two weeks and requires an iLok account and iLok License Manager.checked 7 Oct 2026
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