The 7 Best Phaser Plugins of For Maximum Modulation (2025)

​Phasers are all about depth and movement.

They can elevate your tracks with swirling modulation, and add that subtle or extreme vintage vibe your tracks might be missing. 

Plus, they can instantly transform basic sounds into dynamic, living textures, and seriously enhance the overall character of your mix.​ 

As producers, knowing all about the best phaser plugins in the game can completely up your modulation workflow and help you get that phaser sound just right.​ 

That’s why I’m breaking down the best phaser plugins 一 all containing the best features and functions, like:​

• Adjustable frequencies​ ✓
• Detailed modulation control​ ✓
• Vintage emulation​ ✓
• Easy-to-use mono settings​ ✓
• Lush stereo spread​ ✓
• Rich analog-style saturation​ ✓
• Super clean audio signal​ ✓
• Flexible stage phase options​ ✓
• Unique flanging effects​ ✓
• Much more​ ✓

By the end, you’ll know all about the best phaser plugins and what they’re really capable of, and don’t worry I’ll be giving you the real-deal about each.

This way, you never have to wonder what you’ll be getting and, unlike some other articles, I won’t be leaving anything out (the good and bad). 

This way, you’ll be able to pick the perfect plugin for your next track and work your modulation magic like a boss.​

#1. Sound Doctor by Unison Audio

Sound Doctor by Unison Audio is not your typical phaser plugin.

It’s built specifically to give your sound super clean, professional modulation all day, without needing to tweak parameters for hours (big plus).

One thing that makes Sound Doctor really stand out is its huge library of ready-to-go FX chains, including tons of great phaser presets that sound good right out of the box.

Everything from subtle vintage sweeps on vocals to aggressive phase modulation for synth leads or basslines is all right here. 

My favorite part, though, is the randomize feature, which instantly creates new FX chains, so when you’re feeling blocked or just want to experiment, you’re literally one click away from discovering fresh phaser sounds you’d probably never think of yourself. 

You can also adjust intensity, speed, and saturation of each preset.

So, if a preset is almost perfect, you can simply dial in the modulation depth (around 70% or slow the LFO to around 0.5 Hz) to nail down the exact vibe you’re going for.

Overall, if you’re looking for a fast, intuitive way to add professional-grade phaser effects without fuss, Sound Doctor is definitely one of the best phaser plugins, period.

Download The Best Phaser Plugin Now

Standout Features & Functions:

• Massive library of phaser presets
• One-click random FX chain generation
• Adjustable intensity, speed, and saturation controls
• Easy-to-use, intuitive interface
• Professional, ready-to-use phaser chains
• One of the best phaser plugins in the industry

#2. Soundtoys PhaseMistress

Another one of the best phaser plugins in the game (and my personal number 1 pick aside from Sound Doctor, of course): Soundtoys PhaseMistress. 

This thing gives you 69 killer phaser styles modeled after classics like the: 

• Bi-Phase
• Boss Super Phaser
• MXR Phase 90
• Moog 12-stage
• Electro-Harmonix Small Stone

You’re able to flip instantly between subtle 2-stage sweeps or intense 24-stage modulations, which I’m all about.

My go-to, though, would have to be the Rhythm modulation mode.

It syncs perfectly to your track’s tempo, so dialing in rhythmic pulses at exact subdivisions like 1/8 or dotted notes at 120 BPM is a breeze. 

Plus, the resonance knob lets you crank up the effect intensity when you need extra punch. 

The Tweak panel is another place where PhaseMistress truly shines.

You can fine-tune stages (2-24), modulation depth, and even add analog-style saturation around 70-80% to give your sound that warm, vintage color without muddying your mix. 

If you’re into getting experimental, the random and step modulation modes are awesome for creating unexpected textures and robotic rhythms.

It’s perfect for adding some character to percussion loops or quirky synth lines. 

It also handles mono signals really well, so your bass or kick can get subtle phasing without losing clarity or punch. 

One more feature worth mentioning is the Mix knob 一 it’s great for blending in just the right amount of effect, so subtle phasing on vocals or guitars sound super clean.

The only small downside is the initial learning curve I guess, but, once you get comfy, it’s easily one of the best phaser plugins out there, and not just by a little bit.

Standout Features & Functions:

• 69 classic phaser models
• Adjustable 2 to 24 stages
• Rhythm modulation mode (syncable subdivisions)
• Deep Tweak panel customization
• Analog saturation control
• One of the best phaser plugins in the industry

#3. Eventide Instant Phaser Mk II

Next, let’s talk about another absolute classic in the phaser world: Eventide Instant Phaser Mk II, which is definitely one of the best phaser plugins ever remade. 

It’s a digital reincarnation of the legendary 1972 hardware that first introduced the phaser effect 一 perfectly nailing that warm, vintage sound. 

What sets it apart are its 4 modulation modes for full control whether you want slow, evolving sweeps or quick, rhythmic pulses:

Manual mode lets you hand-set the phaser’s sweep position, which is great for adding subtle movement exactly where you want it in your track. 

Oscillator mode provides classic LFO-based sweeps, easily adjustable from smooth, slow cycles (around 0.1 Hz for mellow pads) to quicker, rhythmic modulations (up to several Hz, ideal for more energetic synth leads or rhythmic guitars). 

Envelope mode, my personal favorite, dynamically responds to your input signal.

This means it follows the natural rhythm and intensity of vocals, guitars, or drums 一 creating organic modulation effects without needing to manually automate parameters. 

Remote mode allows you to control the phaser externally, so it’s perfect if you’re into real-time tweaking with MIDI controllers or automation.

Another awesome and unique control is the “Age” knob, which lets you mimic the character of older, worn-out analog gear by simulating slight imperfections.

My advice is that you dial this around 60-75% for some beautiful vintage-style saturation and subtle frequency drift, just saying.

Plus, the Wide mode applies slightly offset phase shifts to the left and right channels, creating lush stereo spreads ideal for pads/spacious guitars. 

If you’re aiming for a super clean stereo image with just the right amount of warmth and character, Instant Phaser Mk II easily knocks it out of the park, for sure.

Standout Features & Functions:

• 4 modulation modes (including dynamic Envelope mode)
• Unique “Age” knob for analog warmth
• Wide stereo mode with offset phases
• Side-chain input capability
• Vintage-inspired saturation
• One of the best phaser plugins in the industry

#4. Softube Fix Phaser

Now let’s talk about Softube Fix Phaser, easily one of the best phaser plugins when you’re after that authentic vintage pedal sound. 

It perfectly captures the analog warmth of classic phaser pedals with adjustable stages from 2 up to 10.

So, when it comes to subtle modulation on vocals or full-on psychedelic sweeps on synth pads, you got it all. 

One of its most useful features is the modulation “Sweep” control, which lets you manually set modulation rates anywhere from super slow to faster pulses around 6 Hz.

And yes, it’s syncable to your DAW’s tempo, say at quarter-note pulses at 120 BPM. 

You also get three distinct stereo modes with Fix Phaser: 

• Normal 一 Keeps things simple with a classic phaser effect.
• Effect mode 一 Applies different phase-shifts to left and right channels for a fuller stereo spread, and my favorite.
• Wide 一 Converts mono signals into expansive stereo images, instantly bringing depth to guitars or keys stuck in the center.

Another great addition is the Mix knob for easily tweaking the wet/dry ratio to keep the effect subtle or push it forward without drowning out your original sound. 

The “Regen” (feedback) control also further enhances the intensity so you have control over how pronounced the phaser sweep becomes.

Side note, dialing this around 70% adds that nice vintage saturation. 

Personally, I think the strongest feature about Softube Fix Phaser is how great it is when it comes to recreating that classic phaser sound while still feeling intuitive/modern; it’s definitely its strong point. 

The moment you listen, you’ll get it.

Standout Features & Functions of Fix Phaser:

• Adjustable stages (2-10 stages)
• Modulation rate from 0.01 Hz to 6 Hz
• Three stereo modes (Normal: classic, Effect: rich stereo, Wide: mono-to-stereo)
• Tempo-synced modulation control
• Reliable developer and sounds good all the time
• Mix and Regen (feedback) knobs so you can tweak to taste
• One of the best phaser plugins in the industry

#5. Moog MF-103S 12-Stage Phaser

Moog MF-103S 12-Stage Phaser isn’t just another basic phaser plugin.

It’s a meticulous recreation of the classic Moogerfooger MF-103 pedal, and perfectly captures that warm, creamy vintage phaser tone Moog is famous for.

One unique thing about it is that you can instantly switch between 6-stage and 12-stage phasing without a problem:

• 6-stage gives you smooth, subtle sweeps (perfect for vocals or acoustic guitars).
• 12-stage is way more intense, ideal for lush synth pads or thickening drum loops. 

It also features an ultra-flexible onboard LFO with a modulation “Rate” control ranging from an ultra-slow 0.01 Hz up to a super-fast 250 Hz.

So, when it comes to its capabilities, you can dial it down or go for wild, almost ring-modulated textures, and everything in between.

Another standout feature is the dual output (Main and Aux).

It lets you create true stereo movement by sending different frequency ranges to the left and right channels for rich, swirling stereo textures. 

My personal favorite controls here are “Resonance,” which emphasizes the phaser peaks, adding depth and character when set around 60-75%.

As well as “Drive,” which introduces authentic analog-style saturation for subtle warmth and thickness. 

Bottom line, whether you’re going for vintage vibes or modern modulation, the Moog MF-103S is easily one of the best phaser plugins ever 一 it definitely goes hard.

Standout Features & Functions:

• Selectable 6-stage and 12-stage modes
• LFO rate from 0.01 Hz to 250 Hz
• Dual outputs (Main & Aux) for stereo movement
• Resonance control (peak emphasis)
• Analog-style Drive for warm saturation
• One of the best phaser plugins in the industry

#6. Arturia Phaser BI-TRON

Now let’s jump into one of the absolute best phaser plugins around, especially if you’re after that authentic vintage flavor: Arturia Phaser BI-TRON. 

This one is modeled directly from the legendary Mu-Tron Bi-Phase pedal, known for its dual phaser circuits (super unique). 

Each phaser channel has up to 12 adjustable stages, independent controls for: 

• Modulation depth
• Feedback
• Modulation source

So, needless to say, you’ll get crazy amounts of control. 

You can run the two phaser circuits in series (for intense stacked modulation) or parallel (for spacious stereo effects) 一 dealer’s choice.

It also features two independent LFO sweep generators, each with selectable waveforms like sine, square, and sawtooth that sync to your DAW’s tempo.

Personally, my favorite part is the built-in envelope follower, which dynamically adjusts the modulation based on your input signal.

With it, you can get some killer knock on funk guitars or punchy drum loops. 

On top of all that, it even simulates the original unit’s expression pedal, letting you manually sweep through the modulation range for real-time phasing effects that sound seriously good.

Standout Features & Functions:

• Dual independent 12-stage phaser circuits
• Series or parallel routing modes
• Seriously great for the price
• Two syncable LFO sweep generators
• Envelope follower for dynamic modulation
• And don’t forget the expression pedal simulation
• One of the best phaser plugins in the industry

#7. D16 Fazortan 2

Next, let’s check out D16 Fazortan 2, which, imo, is another one of the best phaser plugins around if you want a genuine vintage-style phase.

Without sounding cheap or digital, I might add. 

It captures the warm analog character of classic ’70s phaser pedals, and it does it insanely well, especially with its adjustable phaser stages (2, 4, 6, or 8 stages). 

Two stages give you subtle modulation, which is great for adding just a bit of movement to vocals, while bumping it up to 8 stages gives your sound a more intense sweep.

This is perfect for instruments like electric guitars or synth pads. 

What sets it apart is its dual-LFO system, each offering seven different waveforms, including sine, triangle, and hyper-triangle.

Plus even random waves for creative experimentation. 

Plus, both LFOs sync flawlessly to your DAW tempo, so you can easily lock modulation rates into rhythmic subdivisions like triplets at 140 BPM. 

My personal favorite function about this good VST phaser is the “Stereo Phase” knob, which shifts the modulation timing slightly between left and right channels.

This will give you a wider, richer stereo spread 一 set it around 50-60%, and your sound immediately feels bigger and more immersive. 

Another nice touch is the Feedback control.

Cranking this around 70% adds extra resonance and character to your sound, nailing that authentic vintage vibe; with this unique plugin, your creativity will never be blocked.

Bottom line, even though it’s last on the list, it’s certainly one of the best phaser plugins around.

Standout Features & Functions:

• Adjustable phaser stages (2, 4, 6, or 8)
• Dual-LFO system with 7 waveform options
• Stereo Phase knob for enhanced stereo spread
• Tempo-synced modulation capability
• Feedback knob for added resonance like I mentioned
• One of the best phaser plugins in the industry

Final Thoughts

Now that you’ve got the full breakdown of the best phaser plugins in the industry, you can start adding some serious modulation magic to your tracks. 

Whether you go with the vintage warmth of the Moog MF-103S, or my personal number 1 pick (Soundtoys PhaseMistress), each plugin is super solid.

They all bring their own unique vibe and powerful features to the table, so it all boils down to your personal preferences and what you’re looking for.

But getting your phaser dialed in perfectly is just half the battle 一 you’re also going to need top-notch samples to bring your sounds to life.

Well luckily, the Best Free Sample Packs are right here.

From super dope basslines and drum loops to hypnotizing melodies and even project files, they’re all here (and created by the world’s best producers as well).

They’re perfect whether you’re starting a new track from scratch or just looking for extra inspiration to push through a creative block.

And don’t forget to always keep experimenting, push your plugins to their limits, and think outside of the box. 

This way, you’ll come up with fresh, unique sounds, enhance your skills, and truly set yourself apart from the competition.

Until next time…