Effect / Soundtheory
Gullfoss
8.7Great
Gullfoss is an intelligent equalizer that uses a computational auditory perception model to improve a mix's clarity, detail, spatiality, and balance.
Plugin comparison
Gullfoss vs Zynaptiq UNFILTER
Specs, price and the Dubspot Score, side by side — with our verdict on which effect to buy.
Independent score / workflow fit / buying signal
Contenders
The side-by-side
8.4Great
Zynaptiq UNFILTER by Zynaptiq. Adaptive inverse EQ that removes comb filtering and resonances, a rescue tool for dialogue, music, and location audio.
Score verdict
Which should you buy?
On the Dubspot Score, Gullfoss comes out ahead (8.7). That said, the right pick depends on your workflow and budget — read both reviews before deciding.
Technical matrix
Specs compared
| Signal | Gullfoss | Zynaptiq UNFILTER |
|---|---|---|
| Price | — | $399 |
| Dubspot Score | 8.7 | 8.4 |
| Formats | AU, VST, VST3, AAX Native | VST3, AU, AAX |
| Official price | EUR 178.00 (no USD price listed on the official store) | — |
| Editions | Gullfoss, Gullfoss Live, Gullfoss Master (share one installer) | — |
| Processing latency | ~20ms (Gullfoss & Gullfoss Master); ~2ms (Gullfoss Live) | — |
| Sample rates | 16 kHz to 384 kHz | — |
| Channels | Mono-to-mono or stereo-to-stereo (stereo compatible with M/S) | — |
| EQ update rate | ~300 equalizer updates per second; ~1000 auditory model updates per second | — |
| System requirements | macOS 10.9+ / Windows 7+, 64-bit host, OpenGL 3.2+; iLok License Manager for activation (no dongle required) | — |
| Type | — | Adaptive inverse EQ / resonance remover |
| Developer | — | Zynaptiq |
See the full plugin database for more comparisons.