Waves Curves AQ vs Curves Equator: Key Differences Explained

Discover how Waves Curves AQ and Curves Equator can reshape the way you mix. Solve tonal problems, enhance the tone & presences of your tracks, bringing professional polish to your mixes smarter and faster than ever.

Read Time: 8 minutes

Article Chapters:

• What Exactly Do Curves Equator and Curves AQ Do?
• How Do Curves Equator and Curves AQ Plugins Work Differently?
• Resonance Suppression vs Tonal Balance: Two Different Missions
• How to Use Curves AQ and Curves Equator in Under 5 Clicks
• Sidechain Features: Comparing Equator Learn Listening and AQ MixSense
• Static vs Dynamic EQ Blending in AQ: A Closer Look
• Conclusion: Smarter Tools, Better Results

What is the difference between Waves Curves Equator and Curves AQ? Both were designed around the same smart technology concept. Both listen to your tracks, figure out what needs attention and work to improve the overall quality and presentation of sound. However, what they fix and how they go about it are very different. One focuses on reducing what shouldn’t be there, the other brings out what should. Learning how each plugin works will give you the ability to mix more efficiently and (most importantly) get better results with little to no guesswork.

In this article, we will explain how Curves AQ and Curves Equator work, highlighting their key differences, showing how their sidechain features unlock even more mixing power and suggest when and why you’ll want to use both plugins in your music projects.

What Exactly Do Curves Equator and Curves AQ Do?

Let’s start by looking at the different roles each plugin plays in audio production.

Think of Curves Equator like a trusted mix engineer who has a technically sharp ear for hearing trouble spots. This “engineer” listens closely, picks out the harsh highs, muddy low-mids and unwanted resonant rings, then gently tames them. The character of your track stays true, but the distractions quietly fall away — leaving you with a cleaner, more focused sound.

Curves AQ, on the other hand, is more of a creative producer with great taste and instinct. This “producer” doesn’t just listen for problems, they focus on the overall sound to figure out how to shape sound into something more balanced, musical and mix ready. After analysing your track, AQ gives you five tailored tonal options to choose from, each created to bring out the best in what it hears. What would normally take years of experience and lots of careful EQ work happens in seconds, giving you results that just sound right.

In Summary: Both plugins deliver intelligent sound shaping, but serve different roles in your mix. Curves Equator tames harsh, unwanted peaks automatically, only when needed.. Curves AQ analyzes your audio and applies the right EQ moves, boosting or cutting where needed, to shape your sound with precision and musicality.

How Do Curves Equator and Curves AQ Plugins Work Differently?

Now that you’ve got a broad overview of these two plugins, let’s dive deeper into how these differ in terms of technology.

At its core, Curves Equator is a resonance suppression plugin. Using Learn mode, it performs a spectral analysis of your audio to define what “healthy” frequency content looks like.

By listening to a clean, resonance-free section, it sets a threshold based on that reference. As your mix plays, Equator then applies precise, adaptive attenuation to peaks that exceed this threshold — taming harshness only when and where it’s needed.

Watch: The tutorial below shows you how Curves Equator goes about removing muddy tones in a mix.

Equator’s suppression is extremely targeted, meaning while it works its magic removing unwanted buildups, harshness, boxiness or ringing, it also leaves the natural tone of the track or mix untouched. Equator is not about reshaping the entire spectrum; it’s about carefully cleaning up what is actively getting in the way of a balanced sound.

Think of it like an intelligent dynamic notch EQ that only engages where and when needed, without flattening the life out of your recordings.

By contrast, Curves AQ is a different beast altogether. It’s an autonomous EQ plugin designed to address the full tonal profile of whatever audio you process with it.

Once AQ’s AI-assisted learning analyzes your track, whether it be a vocal, a drum kit, a bass guitar or a full stereo mix, it automatically identifies the track type. It then generates five original musically appropriate EQ target curves for the content that you can pick between.

Select between “Instrument” or “Mix” – depending on your audio content then click Learn. Put your track or mix into playback, wait a few seconds and let AQ go to work for you.

Instead of simply reacting to problem areas, AQ’s aim is to rebalance the entire frequency spectrum based on how the material should sound at its best. It intelligently applies boosts and cuts, shaping your audio into a more refined and professional result.

AQ also offers a rare feature not often found in EQ plugins. It allows you to blend between static and dynamic EQ processing. By use of a single slider, you have full control over how reactive or consistent the tonal shaping should be.

Choose or blend between rigid static EQ or responsive dynamic EQ with the slider in the bottom left of the plugin

The five tonal targets provided are never random or based on predefined presets either. They are created based soley on the input material it hears and can be further refined using EQ Nodes, 4 Frequency Anchors, Tilt, Offset, the four band controls and the Static/Dynamic blend setting.

Watch the tutorial below to learn how to get the most of AQ’s controls.

In Summary:

• Curves Equator is a subtractive problem-solver. It hunts for bad resonances, harshness, boominess and boxy mids that can easily build up and clutter your mix. By reducing these, you get a cleaner more professional starting point to mix from.
• Curves AQ is a full on, cognitive and powerful equalizer. It focuses on shaping the overall tone and energy of a track to match a more polished and intentional result. AQ can indeed help to reduce problems, but it's more about creating an engaging and emotionally resonant sound.

Resonance Suppression vs Tonal Balance: Two Different Missions

Professional mix engineers and producers have long separated these two workflows into two stages: correction first, enhancement second.

The first goal is always to fix what is “broken” with some form of surgical precision to create a balanced foundation to build upon.

Once problems are addressed, the second goal is to bring out what is beautiful and powerful within the sound so the mix feels shaped into something more vibrant and emotionally engaging.

Curves Equator and Curves AQ were built with this workflow philosophy firmly in mind. These are not competing plugins, they are designed to work together, each handling one essential part of the process.

A Short History of Resonance Control

Before tools like Curves Equator existed, dealing with problematic resonances was somewhat less sophisticated. Engineers relied on more traditional tools such as DeEssers, basic notch EQs or static high-pass and low-pass filters to clean up audio.

DeEssers were among the first dynamic tools originally developed to target and tame harsh sibilance, specifically in vocal recordings. While effective, by today’s standards, DeEssers were a blunt instrument for this application. DeEssers often affecting broader frequency ranges, which if pushed too hard could leave tracks sounding dull and lifeless.

Going further back (and speaking more broadly about applying correction before enhancement), engineers would also use simple high-pass filters to remove excess low-end rumble. Likewise, low-pass filters would be used to tame hiss noise or overpowering harshness. These tools were essential but offered limited precision. Compromises had to be made, often removing parts of the sound you wanted to keep just to deal with the parts you did not.

BLUE: Reduction – YELLOW: Threshold Curve

Today, plugins like Curves Equator have changed everything. Instead of relying on static filters or manual EQ sweeps, engineers can now use real-time learning algorithms to identify and suppress only the frequencies that truly need to be addressed. No guesswork. No heavy-handed cuts. No trade-offs in integrity and musicality, just intelligent, adaptive clean-up that leaves the essence of the recording untouched.

5 profiles to choose from after Learn

For EQ, Curves AQ takes the evolution of tone shaping to new heights by shifting the focus from only fixing problems to improving the tonal shape of the track. Instead of just removing unwanted elements, AQ helps define how a track should sound at its best, offering target curves that balance, energize and enhance the full frequency spectrum.

How to Use Curves AQ and Curves Equator in Under 5 Clicks

One of the best things about Curves AQ and Curves Equator is how easy each are to use. They’re built to be as simple or as detailed as you need. You can dig into the Advanced Controls if you want, but even just using the core controls gives access to the full power on offer in these plugins. The essentials aren’t a stripped-down version, they’re designed to give you great results right out of the gate.

Most of the heavy lifting happens automatically within the first few clicks, giving you either the best possible starting point or, quite often, the finished result you need right away.

Here is how fast it can be to dial in the perfect tone:

Curves Equator using Learn: Quick Start in 5 Clicks

• Load Curves Equator onto the track you want to clean up.
• Select a part that is free of problems and Click the Learn button.
• Wait a few seconds while Equator creates a threshold curve from it.
• Adjust the main Threshold knob if you want more or less suppression.
• Bypass to compare, then leave it running or fine-tune further if needed.

Curves Equator without Learn: Quick Start in 5 Steps

• Load Curves Equator onto the track you want to clean up.
• Adjust the main knob (drag it down).
• Adjust the Shape/Tile if needed.
• Tweak the amount of reduction within the 4 bands.
• Add nodes where you see energy build ups (dragging a nod down means more reduction).

Read More: Curves Equator: A Deep Dive into Every Feature For Perfect Resonance Suppression.

Curves AQ: Quick Start in 5 Clicks

• Load Curves AQ onto the track or bus you want to shape and select between instrument or mix.
• Click the Learn button and play your audio for a few seconds.
• Choose one of the five suggested tonal curves based on what sounds best.
• Adjust the Main Amount knob to control how strong the processing is (optional: adjust strength of the boosts and cuts with the blue and purple slider controls either side of the main control if you need more or less processing).
• Tilt or tweak Target curve slightly if you want to brighten or darken the results.

Read More: 12 Ways To Try Curves AQ in Your Mixing Workflow

Sidechain Features: Comparing Equator Learn Listening and AQ MixSense

Now that you know how to get started with Curves AQ and Curves Equator in just a few clicks, let's take things a step further by exploring the powerful sidechain options available within each. Both plugins make it easy to unlock deeper processing techniques once you understand what each sidechain is used for.

Curves Equator: Sidechain Learn Listening

LEFT: Curves Equator Learning – RIGHT: Red Threshold Curve based on sidechain listen

When you activate sidechain learning, Equator analyses the sidechain signal from another track and creates an averaged threshold from it, to be used to reduce frequencies on the track you are processing. Any frequencies in the processed track that compete or clash with the side-chained audio will be attenuated.

For example, if you place Equator on a full-bodied sounding acoustic guitar track and set the sidechain to listen to the lead vocal, Equator will listen to the vocal’s tonal profile and dynamically suppress frequencies within the guitar that would otherwise get in the way of the vocal. This is an extremely fast way to declutter overlapping instruments without heavy EQ manual carving.

Mix Example:

• Place Equator on an acoustic guitar track.
• Sidechain the lead vocal into Equator.
• Learn mode identifies and suppresses guitar frequencies clashing with the vocal, making the vocal cut through more easily.
• Set the main Threshold Dial to taste.

Curves AQ: MixSense Spectral Ducking

Curves AQ offers a more advanced form of sidechaining called MixSense. Unlike traditional ducking, MixSense compares the frequency content between two tracks, not just their volume. It then dynamically attenuates only the overlapping frequencies in real-time.

Example:

• Place AQ on a synth bass.
• Sidechain the main beat into MixSense.
• Enable MixSense and fine-tune the sensitivity.
• AQ will dynamically suppress only the synth bass frequencies where it hears masking between the two tracks.

This results in an incredibly natural sound where both elements easily coexist without fighting for space.

Check out the article linked below to learn more about what MixSense is, how it works and why it could quickly become one of the most valuable tools in your mixing workflow.

Read more: Curves AQ MixSense: The Smartest Way to Get Better Track Separation.

Static vs Dynamic EQ Blending in AQ: A Closer Look

Let’s stay with Curves AQ and look at one of its most powerful features — the ability to blend Static and Dynamic EQ processing using a single control. This isn’t just a handy extra, it gives you real control over how the plugin responds to your audio in real-time, letting you find the sweet spot between a consistent sound and one that reacts to the performance.

Static vs Dynamic EQ: What’s The Difference?

LEFT: Static EQ – RIGHT: Dynamic EQ

• Static EQ: Based on the Target Curve chosen after the Learn process, AQ applies fixed boosts and cuts across the frequency spectrum. These stay constant regardless of what is happening in the signal over time.
• Dynamic EQ: This responds to the incoming audio and adjusts EQ gain in real-time. It only applies processing when certain frequencies become overly prominent, making it more reactive and context-sensitive.

In AQ, both engines are always working in the background. The Static/Dynamic slider lets you control which one takes priority.

Why This Matters: In real-world mixing, different tracks demand different responses. Static EQ is useful for broad, consistent tonal shaping, especially when the source is steady and predictable (such as a synth pad or electric bass). However, on more dynamic material like vocals and acoustic instruments, static boosts and cuts can sometimes sound too rigid or exaggerated during louder passages.

Dynamic EQ solves this by only acting when a problem emerges, making it ideal for taming occasional harshness or taming energy peaks in real-time. But on its own, it may not address ongoing tonal imbalances that are present throughout the track.

This is where AQ’s hybrid approach shines. By blending static and dynamic processing, you get the best of both worlds. You can use some static EQ to maintain the tonal shape you want, while having some dynamic EQ that adds a layer of subtle color that responds musically to the performance.

You are not choosing one method over the other, you are fine-tuning how much real-time adaptation you want, on top of a solid Target Curve tonal foundation.

In Summary: This flexibility is rare, even among premium intelligent EQs. Most plugins force you to pick one approach or the other. AQ gives you both, working in tandem, with full control over the balance, so it’s well worth playing around with!

Curves AQ and Curves Equator: Waves’ Vision for the Future

AI-assisted plugins are changing the way we approach music production and mixing. They are not replacing creativity; they’re making more room for it. Plugins like Curves AQ and Curves Equator were designed with that in mind. They use intelligent analysis to take care of the technical heavy lifting so you can focus on making better musical decisions with more confidence.

A new addition to the Curves series is currently in development, building on the same idea. As modern audio production becomes faster and more demanding, AI-assisted tools are helping musicians and producers stay focused, efficient and creative at every level.

Conclusion: Smarter Tools, Better Results

For years, mixing with EQ has been a manual process filled with guesswork and trial and error. Truly mastering EQ took time, patience and a well-trained ear. But with plugins like Waves Curves Equator and Curves AQ, those challenges have become much smaller.

Thanks to smart analysis, adaptive processing and intuitive design, these plugins take care of the technical workload so your creative instincts can lead the way. Your mix decisions come from feel, not second-guessing. If you want to mix with more intention, achieve better sound and stay ahead of the curve (pun intended), give Curves Equator and Curves AQ a try today. Be sure to keep an eye out — we've got more smart plugins coming very soon!