Soundtheory Gullfoss is an intelligent, real-time EQ that listens to your audio and continuously optimizes tonal balance and clarity. Set a few controls, press play, and watch buried details emerge while harshness and masking calm down.
🎛️ What’s Inside?
| Control | What It Does | Where It Helps |
|---|
| Recover | Brings forward masked elements to restore detail and depth | Vocals that feel buried, percussion texture, ambience |
| Tame | Reduces dominant areas that cause masking and harshness | Sibilance, cymbal glare, boxy mids, boomy lows |
| Bias | Balances how strongly Recover or Tame acts in borderline areas | Fine tuning the overall behavior |
| Brighten | Offsets the top-end balance in a natural way | Adding air or calming brightness |
| Boost | Adds fullness and weight while keeping mids clear | Buses, masters, instruments that need body |
Recover
What it does: Restores masked details for extra clarity
Perfect for: Vocals, percussion, ambience
Tame
What it does: Controls dominant, harsh areas
Perfect for: Harsh highs, muddy lows
Bias, Brighten, Boost
Steer behavior, adjust air, and add tasteful weight
🎯 Why Producers Use Gullfoss
Gullfoss reacts continuously using a perception model, so it separates masked frequencies, lowers clashes, and improves intelligibility on the fly. It is transparent on individual tracks, buses, and the stereo mix, and it keeps punch and loudness natural rather than squashing dynamics.
💡 Key Benefits
- Automatic masking reduction with clean, musical results
- Transparent processing that preserves perceived dynamics
- Live, Standard, and Master modes for tracking, mixing, and final mastering
- Works on anything – vocals, drums, synths, full mixes
- Simple workflow with five main controls
🎚 Best Use Cases
- Mix bus polish for clarity before limiting
- Drum and instrument buses to reduce masking
- Vocals that need presence without harshness
- Restoring detail in dense arrangements
- Final mastering touch for balance and depth
📋 Technical Specs
| 💻 Formats | VST3, AU, AAX, 64-bit |
| 🖥️ Windows | Windows 10 or Windows 11 |
| 🍎 macOS | macOS 10.13 or later, Apple Silicon and Intel supported |
| ⏱️ Latency | Standard mode about 20 ms, Live mode about 2 ms |
| 🧠 Processing Rate | About 300 EQ updates per second, about 1000 model updates per second |
| 📊 Sample Rates | Supported from 16 kHz up to 384 kHz |
🚀 What You Get Right Now
✅ Instant Download – start polishing your mixes today
✅ Lifetime License – one-time purchase
✅ Free Updates – improvements included
✅ Three modes – Live, Standard, Master
💡 Pro Tip
On a mix bus, set Recover and Tame around 20 to 40 percent, adjust Bias until the balance feels right, then use Brighten only if the top end needs a gentle tilt. Add a touch of Boost for weight, and bypass to confirm the improvement is musical, not just louder.
🎧 Use Gullfoss to reveal detail, open the mix, and keep dynamics intact. It is a fast, reliable way to get clarity without losing vibe.
❓ FAQ
Is Gullfoss for mixing or mastering?
Both. It shines on the stereo bus, instrument buses, and individual tracks.
What are the differences between Live, Standard, and Master?
Live offers very low latency for tracking, Standard is the everyday choice for mixing, and Master focuses on the highest quality for final prints.
Will it change my punch or loudness?
Gullfoss is designed to preserve perceived loudness and dynamics while reducing masking.
Does it work at high sample rates?
Yes. It supports common project rates from 44.1 kHz up to high-resolution formats.
Can I limit processing to part of the spectrum?
Yes. Set low and high frequency limits to process only the band you choose.
🏁 Final Word
Soundtheory Gullfoss is a smart EQ that improves clarity and balance in real time, ideal for quick mix fixes and refined mastering moves inside your DAW.
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