Top 13 Synth Plugins 2025 (All Sorts of Synths)

Today, we’ll review the 13 best synth plugins for producers and sound designers.

Some people simply can’t have enough synths. If you’re lucky, you might have a collection of the best hardware units ever created, but for most of us mere mortals, the plugins will suffice.

Synthesizers have been around since the early fifties, but never before have they been able to do what today’s virtual synths can. And though some still pay homage to the early pioneers, others are pushing forward to create new ways of generating sound.

With that said, let’s check out our list:

The 13 Best Synth Plugins 2025

1. Baby Audio Atoms

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Baby Audio Atoms is a physical modeling-based synthesizer that helps you create authentic and realistic textures in a simple yet effective interface. 

Key Features:

• Physical Modeling Packaged in a Simple and Easy Interface
• Customizable Effects Panel
• Advanced Modulation Capabilities
• Intelligent Patch Creation
• Extensive Preset Library

Compatibility:

Baby Audio Atoms is compatible with Mac OS 10.11 and up (including Native Apple Silicon M1/M2 Compatibility) and Windows 10 or later operating systems with DAWs that support AU, AAX, VST, and VST3 plugins. . .

2. Knif Audio Knifonium

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The Knifonium synthesizer plug-in is modeled after Knif Audio’s Knifonium hardware synthesizer. The plug-in, created by Brainworx, offers the same features as its hardware counterpart, along with a few additional features to expand on the great tube tone. 

The hardware Knifonium is a monophonic, tube synthesizer that offers two VCOs, a 24 dB/Octave ladder filter, a ring modulator, LFO, 2 envelope generators, and a Sample & Hold. The plugin offers the same features along with 8-voice polyphony, an extended keyboard range, quantization control for sample & hold, voice handling controls, mid-side filtering, a unison mode, and a variety of FX created by Brainworx.

You can expect an analog-styled plugin capable of creating warm, smooth pads, edgy FM style tones, and deep, cinematic, and rhythmic pulses. If you would like to hear it for yourself, Plugin Alliance’s SoundCloud page offers 18 short tracks showcasing the plugin’s sound.

Key Features:

• Tolerance Modelling Technology (TMT)
• Selectable Tube Amp Modes
• Voice Handling Settings
• Mid/Side Processing
• Sidechaining Additional Synth Plugins
• Built-In FX Chain

Compatibility:

The plugin is available for Windows 8 or higher and macOS 10.11 or higher, both 64-bit only. It comes in VST 2, VST 3, AU, and AAX formats.

Summary:

Brainworx’s plugin is well made and offers a good software version of a particularly rare hardware synthesizer. The features included expand upon the tonal options well and overall I’d say that this plugin is a welcome addition to anyone’s library.

It sounds great and has a wide range of controllable parameters for you to get creative with. In addition, if you’re looking for a synthesizer plugin that emulates the sound of a tube driven analog synth, you’ve found it.

3. FabFilter Twin 3 

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Twin 3 is the third iteration of the Twin series and is designed to be a versatile and powerful virtual synthesizer for music production and sound design.

It offers a wide range of sound generation capabilities, including subtractive synthesis, frequency modulation (FM), and even wavetable synthesis. That allows you to create diverse sounds, from classic analog-style tones to modern and experimental textures.

It features an intuitive graphical interface that makes sound design and tweaking parameters straightforward.

Key Features:

• Modulation and Effects
• Polyphonic and Monophonic Modes
• Presets and resizeable GUI
• Modular-Style Workflow
• High-Quality Effects
• Easy programming

Compatibility:

The plugin is available in VST, VST 3, AU, and AAX formats (32- and 64-bits) and is compatible with Windows and Mac.

Summary:

FabFilter Twin 3, as compared to its previous versions, boasts an entirely revamped and user-friendly interface, simplifying workflow. Sound quality is enhanced with analog-modeled drift for oscillators and improved filters. The addition of a fourth oscillator further expands sonic possibilities.

With features like polyphonic portamento, live modulation visualization, and extensive help resources, Twin 3 is a versatile synth available in various formats.

4. u-he Diva

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Diva, by u-he, offers limited controls, but it sounds very similar to real analog synths.

Overall, Diva is an easy plugin to navigate. The plugin gives you five different types of oscillators, four kinds of high-pass filters, five main filter options, and three types of envelopes. You’ll find LFOs, the effects, and the available controls in the lower panels, such as sync, pan, and tuning.

Additionally, there are individual menus for modifications, trimmers, scope, and presets.

Key Features:

• Oscillators
• Filters
• Oscillator Voice Detune
• 1200 Presets

Sound & Usability:

Like most analog gear, you lose some flexibility to gain character and personality. And even though this is a plugin, it makes every effort to get the best of the most famous hardware synths. As a result, this plugin’s sound is warm, round, and punchy from the get-go.

Additionally, Diva’s usability is unique. That’s because u-he went for a genuinely analog look and feel for this plugin.

However, the overall UI looks a bit crowded, with small names for small knobs. There are no fancy graphs or metering here, simply the parameters laid down as knobs and faders on a clean background. For that matter, controlling the envelopes with faders will come as a new experience for those only used to digital synths.

Compatibility:

This plugin is available for macOS 10.7 or newer and Windows 7 or higher in VST, AU, and AAX formats.

Summary:

Built as an all-analog solution for your synth needs, u-he’s Diva lets you grasp the sound of the original hardware for a thin slice of their prices. Unlike the originals, though, you can replace the modules and combine them to taste, just to remind you that you’re in the digital realm.

Overall, Diva is a great-sounding plugin that will have a special place in your collection.

5. Universal Audio – Opal Morphing Synthesizer

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Opal Morphing Synthesizer is a Wavetable & Analog soft-synth with unique morphing filters and classic UAD built-in effects.

The plugin consists of three main oscillators, which could be switched between conventional analog waveforms and 91 well-chosen and versatile wavetables, with up to twelve voices of unison, and an additional noise generator, with a separate Mixer section, in which you can balance the levels and even the signal flows of the oscillators and noise generators.

The oscillators have all seven basic analog waveforms, along with a special Ensemble knob that increases the number of voices of the synth, with a slight detune between them, giving a fat and wide analog sound. The plugin can also be rented out or subscribed to using UAD Spark.

Key Features:

• Continually variable filters
• Modulation Matrix Window
• Interesting Modulators
• Studio Quality Effects

Compatibility:

Opal Morphing Synthesizer is currently available only on Mac, comes in AAX, AU, VST 3, and LUNA formats, and has a minimum system requirement of macOS 10.15.  Now, also available on Windows 10 or more.

Summary:

A huge drawback of the plugin is that you can’t load your wavetables into it, although the built-in presets are quite adaptable. Secondly, the CPU usage of Opal Morphing is high.

However, the presets in the synth are great, along with its eye-pleasing interface with the changeable signal map. Overall the plugin sounds high-resolution, has immense functionality, and is versatile.

7. ROLI Equator2

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Equator2, by ROLI, is a six-source hybrid synth with a highly flexible routing engine.

This plugin’s UI is divided into two halves. The top half contains the synth source modules, filters, settings, visualizers, and effects. Alternatively, the bottom half holds all the modulation sources, the five macros, and the routing engines.

This simplified workflow benefits productivity, even though the UI looks crowded. Equator2’s primary offering is the hybrid sources, though. You get oscillator, sampler, granular, and noise sources, which you can use simultaneously in up to six source slots.

Key Features:

• Multiple Sources 
• Flip-Flop 
• 12-Slot Effect Rack
• Routing Matrix

Sound & Usability:

If you want it to, the Equator2 can sound effortlessly warm, complete, and rich. Alternatively, it can sound harsh and powerful. The presets are entire trips on their own – you could spend days just playing and feeling the unusual sounds.

Most presets that use the granular engine, such as “Harp of the Amethyst Circle,” sound natural while still soaked in granulation.

All that shows that you can create your patches and have them be as impressive as you want with Equator2’s versatility. Other than that, usability’s very simple, and finding presets is easy with the tagging system. You can search for sounds based on source, instrument, articulation, and timbre, making life easier and speeding the workflow.

Compatibility:

This plugin is available for macOS 10.14 and newer and Windows 10 in VST, AU, and standalone formats.

Summary:

The ROLI Equator2 is a fantastic synth for producers and artists looking for the best of all worlds. From the analog-like wavetable engine to the all-digital granular synthesis, you’ll have an extremely versatile plugin at your disposal. It’s expensive, but this plugin is a whole instrument, so that’s expected.

If you already own a ROLI keyboard, integration is seamless since you’ll be able to take advantage of all of the patches’ nuances. Nevertheless, it’s a hell of a great addition to your synth collection.

8. Softube Model 72 Synthesizer

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The nicest retro sounds may be obtained by using an analog device.

The finest synthesizer sounds were frequently performed through antique machines, sometimes with hundreds of patch connections or knobs to fiddle with. However, the components inside its structure ensured that these sounds were as unique and original as possible, which is an important feature of their distinct tone.

Softube took the initiative to recreate the essence of a real 1972 hardware in good shape, capturing and translating every aspect into this virtual instrument.

Key Features:

• Designed and built with passion
• Expansion panel
• Tone generator
• Modulation
• Amp Room module
• The modules

Compatibility:

The plugin is available for macOS 10.13 up to 12 (64-bit only) and Windows 10 and 11 (64-bit only). It comes in VST, VST 3, AAX, and AU plugin formats. 

Summary:

Softube’s Model 72 is a great recreation of an instrument that influenced an entire generation of artists and producers, particularly in funk music. With a synthesizer on your side, the possibilities are nearly limitless, and Softube did an excellent job of reproducing virtually old hardware like this synth.

There aren’t many intricate controls, only simple commands that deal with frequency modification like the previous units.

9. Audio Damage Continua

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Continua, by Audio Damage, lets you bend the wave shapes any way you want.

The plugin offers three independent oscillators, two filters, four envelope modulators, and four LFOs. You can use oscillators two and three to modulate the first oscillator and assign noise and drive to the filters.

In addition, you can use the filters in parallel or series for different effects and pan them to taste. In the FX/Output menu, you’ll find a chorus, a delay, and a reverb – all of which are stereo effects. You’ll also get eight macros you can assign parameters to.

Key Features:

• Fifteen Voices
• Filters
• Envelope Generators
• Unisons Mode
• Sample & Hold

Sound & Usability:

You can create mind-bending leads or entire soundscapes with the plugin’s broad set of controls. The extensive modulations, beautiful effects, and nuanced filters make it a unique-sounding tool.

But obviously, a great deal of Continua’s magic comes from its three oscillators. Not only can you create the three most common waveforms, but the plugin also lets you distort the shapes to taste to design different sounds.

When it comes to usability, Continua offers one of the most user-friendly interfaces on this list. If you’re acquainted with synthesizers and have experience building sounds from scratch, you’ll find this plugin an effortless device.

Compatibility:

This plugin is available for Windows 8.1 and higher and macOS 10.12 and newer in VST, AU, and AAX formats.

Summary:

Continua is the perfect plugin for sound designers and producers who want to generate exciting sounds without wasting time. The interface is straightforward, and the parameters all have understandable names rather than confusing acronyms.

You can’t go wrong with this Audio Damage synth plugin. Its highly configurable nature gives you all the control you need over your patches, which results in an excellent workflow.

10. NI Massive X

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Massive X, by Native Instruments, gives you the freedom to create innovative sounds effortlessly.

Even though the plugin only offers a pair of oscillators, the vast wavetable catalog ensures that two is more than enough. Of course, you can combine and shape several pre-made waves further, but you can also adjust the Wavetable Modes. Moreover, the signal chain can be rerouted so that you can achieve different kinds of synthesis techniques.

Key Features:

• Wavetable Modes
• Noise Section
• Insert Effects
• Modulations
• Routing

Use this menu to connect all parts of the synthesizer and come up with different sounds. You can link all parameters and effects differently or bypass an entire section to hear how it sounds.

The menu is divided into Polyphonic and Monophonic sections. You’ll find generators and processors, busses, the feedback loop, and the modulation modules in the first area. Alternatively, the Monophonic area will sum the polyphonic signals and apply the stereo effects. Here you can change the order of the stereo effects for additional experimentation.

Sound & Usability:

Massive X makes it easy to create the sounds you’re looking for. The workflow is simplified by the logical, analog-like disposition of parameters and sections. Starting from the top left, you have the oscillators.

To their right, you’ll find most effects and, below it all, the modulations. Overall, this is a simple-to-use plugin, which makes it accessible for beginners and experienced producers alike.

With over 600 presets, it’s easy to get started, too. Whether you want to change some preset a little or create your patch from scratch, Massive X gives you plenty of options.

Compatibility:

This plugin is available for macOS 10.13 through 10.15 and Windows 10 as a Komplete instrument, without a standalone version. Also, to run Massive X, you need an AVX Compatible processor.

Summary:

Native Instruments’ Massive X is a highly versatile synth that expands on the original’s mythos. Compared to most other synths on this list, its main advantage lies in the highly adaptable Wavetable Modes. They ensure a more extensive library of oscillations than would ever be possible by simply combining differently-shaped waves.

That and the highly user-friendly approach make Massive X an excellent download for your Komplete library.

11. Newfangled Audio Generate

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Newfangled Audio’s Generate builds upon a chaotic generator to create complex and unpredictable sounds.

This plugin uses the concept of additive synthesis to expand a basic waveform and shape it into whatever you need it to be. The signal starts with the Chaotic Generator, rolls into the Wavefolder and the Low Pass Gate.

Like a regular synth, you can also add effects and modulate any parameter you see fit with Envelopes, LFOs, and more.

Key Features:

• Chaotic Generator
• Wavefolder
• Low pass Gate
• Seven Modulation Pages

Sound & Usability:

Creating your chaotic waveform is the most straightforward task possible since you don’t need to understand anything about synthesizers to get started. Simply press a note and watch the yellow lines behind the parameters. Then, as you tweak them, a visual representation of what you’re doing comes alive on the screen.

This innovative concept makes it easy for beginners and fun for the experienced. Different shapes, parameters, and chaotic mode combinations create absurdly interesting sounds, becoming even more enjoyable with modulation.

Compatibility:

This plugin is available for Windows 8.1 and higher and macOS 10.9 and newer in AAX, VST, and AU formats.

Summary:

Generate, by Newfangled Audio, is an impressive tool that you should not take lightly. It might not be as versatile as others on this list in the long run, but it’s the plugin with a very unique sound. In short, Generate deserves a place in your collection, primarily if you work with sound design.

12. Vital Audio – Vital

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Vital is a three-oscillator synth that lets you warp wavetables by addressing their harmonics.

With up to twenty polyphonic voices, two filters, three envelopes, and four LFOs, Vital is a powerful sound design tool. Though it only uses wavetable synthesis, it has a few tricks up its sleeve when shaping waves.

Moreover, the plugin is highly customizable thanks to its multiple Macros and a Sampler that lets you drag and drop your source files into the plugin.

Key Features:

• Adjustable Wavetables
• Transpose Snap
• 9 Effects
• Advanced Tabs

Here, you’ll find some settings for oversampling, voice, and display, but mainly you’ll get options and unison controls for the oscillators and a couple of analysis graphs.

The Unison controls give you enough parameters to let you place those extra voices wherever you want in the stereo field, but also the wavetable. That helps create an image with a lot more depth and width.

Sound & Usability:

Vital sounds like most synth plugins with simple settings engaged. Its characters are not much different from that of an analog synth. It’s when you start using the Unison Spectral Morph that Vital shows its actual capacity.

Under the Unison knob, you can dial in one of several Spectral options that will tackle the waveform’s harmonics. The resulting sounds are often unpredictable but generally very full and, depending on the amount you dial, almost granular-like.

Using the plugin is easy, but mostly if you’re acquainted with the way synths work. That’s not to say Vital isn’t beginner-friendly, although it could at least have some notes when you hover over parameters to give you tips.

Compatibility:

This plugin is available for Linux 18.04 and newer, Windows 10, macOS 10.12, and higher in VST, AU, and LV2 formats.

Summary:

It’s not hard to get a great sound out of Vital Audio’s Vital. It’s a complex plugin with an easy-to-guess workflow and excellent wavetable-shaping options. It offers what most synths plugins offer but delivers just a bit more in some situations.

That and its warping methods put Vital in a unique position among its competitors, making it an essential tool for today’s producers.

13. kiloHearts Phase Plant

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Phase Plant, by kiloHearts, is a highly capable synth with a straightforward workflow.

The plugin’s interface is divided into three main areas: generators, effects, and modulators. The plugin sends the signal from the generator section onto the effects, which you can route anywhere in the plugin.

Phase Plant offers several standard parameters, such as unison, detune, macros, and polyphony, allowing you to create any effect you would be able to with another synth. However, its primary selling point is the multi-mode generators, including a sampler, paired according to necessity.

Key Features:

• Generators
• Snapin Effects Functionality
• Modulators

Sound & Usability:

kiloHearts’ approach to making plugins is efficient when you’re inside its ecosystem. The snapin plugins on their own are good, but some lack features and the “wow” factor. However, when you put them together on a snapin host such as the Phase Plant, you see what they were made for.

Incredibly, you can add as many snapin effects, generators, and modulators as you need without breaking your CPU in two.

The result of this integration is an endlessly versatile synth that sounds as good as any of the more expensive ones. Additionally, the user interface is clean and understandable, making it easy to get great sounds from the plugin.

Compatibility:

This plugin is available for Windows 7 and newer and macOS 10.7 and higher in VST, AU, and AAX formats.

Summary:

You can place this plugin effortlessly among your go-to synths, especially if you already own some snapin plugins. If you don’t, then you need to purchase some to start creating some more elaborate patches.

Nevertheless, Phase Plant offers many generators, making the real difference in developing new and exciting sounds.

Bonuses:

Roland Juno-60

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While Roland may be hesitant to reissue its classic analog synths in hardware form, the company has no qualms about creating virtual versions. 

The Juno-60, produced between 1983 and 1984, is a polysynth that features a single DCO, sub-oscillator, and VCF. It is widely regarded as one of the most influential synths of the 1980s. The signature Juno chorus effect is also present.

Roland claims that its Analog Circuit Behaviour modeling technique, which is at the heart of its replication, will faithfully reproduce the “odd quirks and endearing limits” of the original synth. Some new functions have also been added; for instance, you can now swap out the Juno-60’s regular filter for the Juno-106’s high-pass filter circuit.

Key Features:

• VCA
• Juno Chorus
• Signal Path
• Three Effect Modules
• Patch Bank

Compatibility:

This plugin is available for macOS 10.10 or higher (64-bit only) and Windows 7 or higher (64-bit only). It comes in VST/RTAS/AU/AAX formats and supports 32 and 64 bit systems.

Summary:

If you like the Roland Cloud, here’s another classic synth you can add to your collection at no extra cost: the Jupiter-8. It’s a great-sounding synthesizer, but despite Roland’s assertions, others can emulate the Juno-60. Unfortunately, it’s not the most feature-packed emulation out there, so if you’re looking to buy it as a standalone soft synth, consider the alternatives first.

Softube Parallels

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This synth plugin is focused on exploring new sonic patterns and textures.

If your current production requires massive, big ideas, you must have a trustworthy sonic tool that’s capable of delivering such results. Softube Parallels promises to be such a plugin, providing high-quality waveforms in various shapes, adjustable filters, and awesome effects.

Key Features:

• “Wavescanning” technology
• Elegant design
• Filter types
• Additional presets

Compatibility:

The plugin is available for macOS 10.13 up to 12 (64-bit only) and Windows 10 and 11 (64-bit only). It comes in VST, VST 3, AAX, and AU plugin formats. 

Summary:

Synthesizers can vary greatly in shape and form. They can behave aggressively, lightly, or just be a useful toolkit to include in most of your productions. Parallels get to be more like the last example due to the amount of customization you can apply to your samples and notes.

The futuristic approach towards its functionality makes it a nice tool for cinematic or audacious productions, capable of bearing the most amazing soundscapes you can think of.