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 FabFilter Pro-L 2
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
9.2Essential
FabFilter Pro-L 2 is a true peak limiter plug-in with multiple limiting algorithms and extensive loudness metering.
Score verdict
Which should you buy?
On the Dubspot Score, FabFilter Pro-L 2 comes out ahead (9.2). That said, the right pick depends on your workflow and budget — read both reviews before deciding.
Technical matrix
Specs compared
| Signal | Gullfoss | FabFilter Pro-L 2 |
|---|---|---|
| Price | — | $199.00 |
| Dubspot Score | 8.7 | 9.2 |
| Formats | AU, VST, VST3, AAX Native | VST, VST3, Audio Units (AU), CLAP, AAX Native, AudioSuite |
| 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) | — |
| Limiting algorithms | — | Eight different algorithms |
| Oversampling | — | Up to 32x linear-phase |
| Loudness metering standards | — | EBU R128, ITU-R BS.1770-4, ATSC A/85 |
| True peak limiting | — | Yes |
| Surround support | — | Up to Dolby Atmos 9.1.6 |
| Dithering | — | Advanced, with three noise shaping algorithms |
See the full plugin database for more comparisons.