Trackspacer vs. Soothe 3

If you’ve ever carved 300Hz out of a guitar bus so the vocal could breathe, only to realize the guitars sound completely gutless the second the singer stops, you’ve hit the wall of static EQ. Frequency masking is what happens when two instruments fight for the exact same space at the exact same time, turning a punchy mix into a muddy wall of sound. In 2026, static EQ for unmasking is mostly dead. The industry has fully shifted to dynamic, sidechain-driven unmasking, and two plugins dominate the conversation: Wavesfactory Trackspacer and Oeksound Soothe 3.

For the record, this is written by YECK, founder of MixingGPT. Both of these plugins live on my mix templates. They are often discussed on forums as competitors, but they actually solve frequency masking in two fundamentally different ways. This guide breaks down when to use 32-band broadband ducking versus microscopic spectral resonance suppression, and which tool you actually need to clean up your low end, vocals, and mix bus.

Quick Comparison: Trackspacer vs. Soothe 3 at a Glance

The 30-second version. Full technical breakdowns are below the table.

The Core Difference: Broadband Ducking vs. Spectral Unmasking

To understand why you need one over the other, you have to understand how they “listen” to audio.

Trackspacer splits the frequency spectrum into 32 bands. When you feed a vocal into its sidechain, it analyzes the vocal’s frequency curve and creates an exact, inverted EQ curve on the receiving track (like a guitar bus). If the vocal has a lot of energy at 2kHz, Trackspacer ducks 2kHz on the guitars. Because it only uses 32 bands, the ducking is relatively broad. It creates a smooth, musical “pocket” for the incoming signal. It feels like a very smart, frequency-dependent volume fader.

Soothe 3, on the other hand, operates on thousands of microscopic spectral bands. It was originally designed to find nasty, whistling resonances and pull them down automatically. However, when you use Soothe 3 in sidechain mode (via the SC button on the toolbar), it becomes an unmasker. But instead of carving a broad pocket like Trackspacer, Soothe 3 only ducks the exact, microscopic resonant peaks that are clashing between the two tracks. It is surgical to the point of being invisible. You won't hear a "pocket" being carved; you'll just hear the masking disappear.

1. Wavesfactory Trackspacer: The Sidechain Workhorse

Trackspacer is arguably the best $59 you can spend on your mix. It replaces the old-school method of using a standard compressor to sidechain the bass to the kick drum. Standard sidechain compression ducks the entire volume of the bass every time the kick hits, which can cause an audible, unnatural pumping effect.

Trackspacer only ducks the specific frequencies where the kick and bass overlap. If your kick has a massive thump at 60Hz and a click at 3kHz, Trackspacer will only duck 60Hz and 3kHz on the bass track, leaving the warm 150Hz body of the bass completely untouched. It's the fastest way to get the low end to sit right without overthinking it.

The pro tip that changes results: Mid/Side Mode. If you have wide, panned rhythm guitars masking a lead vocal, don’t duck the entire stereo field. Set Trackspacer to M/S mode and dial the pan knob to 100% Mid. Now, when the singer sings, Trackspacer only carves space out of the center of the guitars, leaving the wide left and right channels massive and untouched.

Best for: Producers who need fast, musical unmasking for the classic kick/bass relationship, or carving out space for a lead vocal in a dense pop or EDM track. It is incredibly light on CPU, meaning you can throw it on 10 different busses without your session crashing.

Where it falls short: It is a blunt instrument. If you feed it a harsh, sibilant vocal, it will carve a harsh, sibilant hole in your guitars. You must use the built-in High-Pass and Low-Pass filters to restrict the ducking (e.g., only ducking between 500Hz and 4kHz) to prevent unwanted low-end rumble or high-end air from triggering the sidechain.

Pricing: Approximately $59 one-time.

2. Oeksound Soothe 3: The Surgical Scalpel

Soothe 3 is a premium, DSP-heavy tool that solves problems traditional EQs cannot touch. While Trackspacer carves a pocket, Soothe 3 acts as a microscopic scalpel.

When used for unmasking via its sidechain input, Soothe 3 shines in complex, dense arrangements where Trackspacer might sound too obvious. For example, if you have a dense wall of distorted guitars and a lead vocal, Trackspacer might carve out too much of the guitars’ midrange, making them sound weak every time the vocalist sings. Soothe 3 (especially using its new level-independent Soft mode) will only duck the specific, harsh overtones in the guitars that are directly masking the vocal’s intelligibility. The guitars stay massive, but the vocal suddenly cuts through perfectly.

The pro tip that changes results: Delta Mode. Always hit the Delta (Δ) button when setting up Soothe 3. This lets you hear exactly what the plugin is removing. If you hear the fundamental body of the instrument in the Delta signal, your Depth and Detail settings are too aggressive. You should only hear the nasty, whistling overtones being pulled out.

Best for: Taming harsh cymbals, sibilant vocals, and synth overtones. As a sidechain unmasker, it is best for rock, metal, and acoustic genres where you want the backing track to stay as loud and natural as possible while the vocal sneaks through microscopically.

Where it falls short: CPU usage and setup time. Soothe 3 is incredibly demanding, especially if you turn on oversampling or linear-phase mode (which adds latency and pre-ringing on transients). Putting it on 15 different tracks for unmasking will bring most computers to their knees. It is also overkill for simple tasks like kick and bass separation, where its microscopic resolution can actually sound less punchy than Trackspacer. You also have to be careful with the Depth knob; push it too far and you'll completely hollow out the source audio.

Pricing: Approximately $259 one-time.

How to Choose the Right Unmasking Tool in 2026

Pick based on the genre, the specific problem, and your CPU headroom. Three honest scenarios:

• You need to fix Kick and Bass relationships: Trackspacer. It is the undisputed king of low-end unmasking. The broad 32-band resolution creates a punchy, musical pocket. Soothe 3 is often too surgical and uses too much CPU for this basic task, though its new SC toolbar button and Hard mode make it much faster to set up than Soothe 2 if you do use it here. (For more on low-end, see our guide on how to sidechain kick and 808).
• You need to unmask a Lead Vocal: It depends on the genre. If you want the vocal to dominate and push the music out of the way (Pop, EDM, Hip-Hop), use Trackspacer. If you want the music to stay as loud as possible while the vocal sneaks through invisibly (Rock, Metal, Indie), use Soothe 3 in sidechain mode (Soft mode works best here to track the vocal dynamically).
• You are taming harshness or working on the Mix Bus: Soothe 3. This is what Soothe was built for. Trackspacer cannot do this, as it requires a sidechain input to function effectively. Soothe 3 automatically hunts down harsh resonances on its own, making it perfect for clearing out low-mid mud buildup before limiting. (See our guide on how to fix muddy vocals).

Where Dynamic Unmasking Is Going Next

The shift from static EQ to dynamic sidechaining was the big leap of the last five years. The next leap, which we are seeing in 2026, is AI-driven unmasking that listens to the entire mix, not just a single sidechain input. Tools like iZotope Neutron and Sonible smart:EQ are beginning to cross-communicate across multiple instances, automatically deciding whether the vocal, the snare, or the synth should take priority at any given millisecond. However, for sheer control and predictability, dedicated point-to-point tools like Trackspacer and Soothe 3 remain the working engineer’s first choice. They just work, and they work exactly how you tell them to.

Frequently Asked Questions

What is the main difference between Trackspacer and Soothe 3?

Trackspacer is a 32-band dynamic EQ that ducks frequencies on a receiving track based on the exact frequency content of a sidechain input. It is a broad, musical unmasking tool. Soothe 3 is a dynamic resonance suppressor that operates on thousands of spectral bands. While primarily used for taming harshness, when used in sidechain mode, Soothe 3 acts as a surgical unmasker, ducking only the microscopic resonant peaks that clash between two tracks.

Which is better for kick and bass: Trackspacer or Soothe 3?

For the classic kick and bass relationship, Trackspacer is generally better and faster. Its 32-band resolution is broad enough to create a musical “pocket” for the kick drum to punch through the bass without completely hollowing out the low end. Soothe 3 is often too surgical for this specific task, though its new SC toolbar button and Hard mode make it much faster to set up than Soothe 2 if you do use it here.

Can Soothe 3 replace Trackspacer?

Not entirely. While Soothe 3’s sidechain mode can unmask tracks, it does so by suppressing specific resonances rather than broad frequency bands. If you want a vocal to carve out a wide, natural space in a dense guitar bus, Trackspacer’s broad strokes sound more natural. If you want a vocal to only duck the specific clashing overtones of a synth, Soothe 3 is superior.

How do I fix a muddy mix using Trackspacer?

To fix a muddy mix, identify the tracks fighting for the low-mid frequencies (usually 200Hz - 500Hz), such as guitars and keys. Place Trackspacer on the less important track (e.g., keys) and route the more important track (e.g., guitars) to its sidechain. Use Trackspacer’s high-pass and low-pass filters to restrict the ducking strictly to the muddy 200Hz - 500Hz range.

Is Trackspacer worth it if I already have a dynamic EQ like FabFilter Pro-Q 3?

Yes. While you can sidechain specific bands in Pro-Q 3, Trackspacer automatically analyzes the incoming sidechain signal and creates an inverse 32-band EQ curve in real-time. Setting up 32 individual sidechain bands in a standard dynamic EQ is impossible; Trackspacer does it instantly with one knob.

A note on freshness: Pricing and plugin features in this article were verified in May 2026. Both Wavesfactory and Oeksound run occasional sales (especially around Black Friday), so check their official sites for the latest pricing.