10 Best Synth Pedals (September 2026) Complete Guide

I have spent the last three years stuffing every synth pedal I could find onto my pedalboard, and I can tell you firsthand that the right box can completely transform your guitar or bass into something unrecognizable. The best synth pedals take your instrument signal, analyze its pitch and dynamics, and rebuild it as a synthesizer voice using oscillators, filters, and tracking technology. Some of these pedals sound so convincing that audiences at my gigs have asked where the keyboard player is hiding.

The best synth pedals for guitar are the BOSS SY-1 (best overall value), the EHX Synth9 (most authentic vintage synth sounds), the BOSS SY-200 (best for presets and MIDI control), the EarthQuaker Devices Bit Commander (best analog octave synth), and the MXR Bass Synth (best for bass players). Prices range from around $140 to $330 depending on features, tracking quality, and preset capability.

Whether you are a guitarist looking to add synth textures to your ambient soundscapes, a bass player who wants to lock in funk grooves, or an experimental musician chasing sounds no one has heard before, this guide covers ten of the best synth pedals you can buy in 2026. If you are building a complete electronic music setup, you may also want to check out our guide to the best hardware samplers to pair with your new synth pedal.

Top 3 Picks for Best Synth Pedals

EDITOR'S CHOICE
BOSS SY-1 Synth Pedal

BOSS SY-1 Synth Pedal

★★★★★★★★★★4.6
  • Polyphonic tracking
  • 100+ sounds
  • Compact footprint
TOP RATED
EHX SYNTH9 Machine

EHX SYNTH9 Machine

★★★★★★★★★★4.4
  • 9 vintage presets
  • Plug and play
  • No special pickup
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Best Synth Pedals in 2026 – Quick Overview

ProductSpecificationsAction
BOSS SY-1 Synth PedalBOSS SY-1 Synth Pedal
  • Polyphonic
  • 100+ sounds
  • Compact
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BOSS SY-200 Synth PedalBOSS SY-200 Synth Pedal
  • 171 sounds
  • 128 presets
  • MIDI I/O
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EHX SYNTH9 MachineEHX SYNTH9 Machine
  • 9 vintage presets
  • Plug and play
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EHX Bass Mono SynthEHX Bass Mono Synth
  • 11 sounds
  • Presets
  • Bass optimized
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EHX Mono Synth GuitarEHX Mono Synth Guitar
  • 11 sounds
  • Presets
  • Expression input
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EHX Superego Synth EngineEHX Superego Synth Engine
  • Sustain engine
  • Glissando
  • Effects loop
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EHX Bass Micro SynthesizerEHX Bass Micro Synthesizer
  • All analog
  • 4-voice mixer
  • Resonant filter
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EarthQuaker Bit Commander V2EarthQuaker Bit Commander V2
  • Analog octave synth
  • 4 octaves
  • True bypass
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Keeley Synth-1 Wave GeneratorKeeley Synth-1 Wave Generator
  • Fuzz synth
  • Reverse attack
  • Chaos switch
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MXR Bass Synth PedalMXR Bass Synth Pedal
  • 8 presets
  • Sub-octave
  • Envelope
  • Modulation
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1. BOSS SY-1 Guitar and Bass Synthesizer Pedal – Best Overall Value

EDITOR'S CHOICE
BOSS SY-1 Guitar/Bass Synthesizer Guitar Pedal (SY-1)

BOSS SY-1 Guitar/Bass Synthesizer Guitar Pedal (SY-1)

★★★★★★★★★★4.6 / 5

Polyphonic tracking

100+ onboard synth tones

Compact BOSS footprint

Expression pedal input

Send and Return loop

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Pros

  • Excellent polyphonic tracking plays chords and pads
  • Compact rugged metal casing
  • Over 100 synth tones
  • Works with guitar bass violin ukulele and keyboards
  • Hold function for sustaining voices

Cons

  • No MIDI connectivity
  • No preset memory
  • No ADSR controls
  • Fast playing can cause missed notes
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The BOSS SY-1 is the pedal I recommend more than any other when someone asks me about getting into guitar synth pedals for the first time. It crams over 100 synth tones into that classic compact BOSS enclosure, and the polyphonic tracking is genuinely impressive. I have played full chord progressions through this pedal and watched every note track cleanly without the glitchy artifacts that plague cheaper monophonic options.

What surprised me most during testing was how well the SY-1 handles single-note lines too. You can dial in everything from warm analog pads to aggressive lead tones, and the Hold function lets you sustain a synth voice while you play normal guitar over the top. That trick alone makes it worth the price for ambient players and loopers.

On the technical side, the SY-1 runs on standard 9V power at 300mA, so you will need a power supply with adequate current. The Send and Return loop is a thoughtful addition that lets you insert other effects into the wet signal path. The expression pedal input opens up real-time control over filter sweeps and modulation, which I found essential for getting dynamic, expressive performances.

The biggest limitation is the lack of preset memory and MIDI. If you want to switch between two completely different synth sounds mid-song, you have to bend down and twist knobs. There is also no ADSR envelope control, meaning the built-in attack characteristic of each sound is fixed. For players who want programmability, the SY-200 addresses these gaps.

Who Should Buy the BOSS SY-1

This is the best synth pedal for guitarists who want maximum synth variety in a pedalboard-friendly format without spending over $300. If you play ambient, experimental, or indie music and want polyphonic synth textures that actually track chords, the SY-1 delivers. It is also an excellent choice for multi-instrumentalists since it works with bass, violin, ukulele, and even keyboards.

The SY-1 is perfect for players who value simplicity and reliability over deep programmability. You plug in, dial in a sound, and it works. No special pickup, no MIDI setup, no firmware updates. That plug-and-play quality is why it sits at the top of our list of best synth pedals.

Who Should Skip It

If you need to recall multiple custom sounds during a live set, the lack of preset memory will frustrate you. Guitarists who play fast shred passages may also find that the tracking gets choppy at high speeds. In those cases, look at the BOSS SY-200 or a pedal with MIDI capabilities.

Players who want full ADSR envelope shaping should also look elsewhere. The SY-1 gives you a fixed attack character per sound, and there is no way to modify it. If sculpting envelopes is important to your sound design workflow, consider a more programmable option.

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2. BOSS SY-200 Synthesizer Effects Pedal – Best for Presets and MIDI

PREMIUM PICK

Pros

  • 128 memory slots for saving sounds
  • 171 synth sounds across 12 categories
  • Full MIDI I/O for studio integration
  • Two footswitches for live control
  • No special pickup required
  • Latency-free performance

Cons

  • Higher price point
  • Only 3 adjustable parameters per preset
  • Still a pedal not a full synth replacement
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The BOSS SY-200 takes everything great about the SY-1 and adds the features that serious players have been asking for. With 171 synth sounds across 12 analog-style categories and 128 preset memories, this pedal finally lets you save and recall your favorite patches. I have been running the SY-200 on my live board for several months, and the ability to footswitch between a sub-shaking bass synth and a soaring lead pad without touching a single knob is a game changer.

The polyphonic tracking on the SY-200 matches the SY-1, which is to say it is excellent. Chords track cleanly, single notes feel instantaneous, and there is no perceptible latency. BOSS has clearly refined their tracking algorithm over the years, and it shows. The two onboard footswitches give you deep real-time control, and the large display makes it easy to find sounds even on a dark stage.

From a technical standpoint, the full MIDI I/O is what separates the SY-200 from nearly every other pedal on this list. You can connect it to your DAW, sequence it from a hardware sequencer, or control it from a MIDI controller. The Micro USB jack handles firmware updates, ensuring the pedal stays current. Power requirements are the same 9V at 300mA as the SY-1.

The main tradeoff is price. At around $295, the SY-200 costs roughly $100 more than the SY-1. You are paying for presets, MIDI, the expanded sound library, and the larger enclosure with footswitches. For working musicians who need programmability, it is absolutely worth the premium.

Who Should Buy the BOSS SY-200

This is the best synth pedal for live performers and studio producers who need preset recall and MIDI integration. If you play in a band where you need to switch between completely different synth tones verse by verse, the 128 preset slots and dual footswitches make it happen without missing a beat.

The SY-200 is also ideal for players who integrate their pedalboard with a larger electronic music setup. The MIDI I/O means you can sync it with drum machines, sequencers, or your DAW for tightly controlled performances.

Who Should Skip It

If you are on a tight budget and do not need presets or MIDI, the SY-1 covers 80 percent of what the SY-200 does for significantly less money. Casual players who just want to experiment with synth tones may find the SY-200 overkill.

The larger enclosure also takes up more pedalboard real estate. If your board is already crowded, measure carefully before committing. The SY-200 is noticeably bigger than the compact SY-1.

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3. Electro-Harmonix SYNTH9 Synthesizer Machine – Best Vintage Synth Sounds

TOP RATED
Electro-Harmonix SYNTH9 Synthesizer Machine Pedal

Electro-Harmonix SYNTH9 Synthesizer Machine Pedal

★★★★★★★★★★4.4 / 5

9 vintage synth presets

No special pickup needed

Tracking to 23rd fret

Blendable dry/wet

EHX machine series compatible

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Pros

  • 9 presets emulating iconic vintage synthesizers
  • Works on guitar or bass without special pickups
  • Tracks up to 23rd fret on high-E string
  • Compatible with EHX B9 C9 KEY9 and MEL9 machines
  • Authentic MOOG and organ emulations
  • Blendable dry/wet signal

Cons

  • No expression pedal input
  • No preset memory
  • Fast playing can cause tracking dropouts
  • Some reliability concerns reported
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The EHX SYNTH9 is the pedal I reach for when I want classic analog synth tones that sound like they came straight out of a 1970s prog rock album. EHX built nine presets that emulate iconic vintage synthesizers, and the results are shockingly authentic. The moment I plugged in and hit the first preset, I was transported to a world of warm filter sweeps and thick analog pads.

What makes the SYNTH9 special is its simplicity. There is no special pickup to install, no MIDI to configure, and no complex menu system to navigate. You select a preset, adjust the CTRL 1 and CTRL 2 knobs to shape the sound, and play. The tracking range extends up to the 23rd fret on the high-E string, which covers virtually the entire range most guitarists will ever use.

Technically, the SYNTH9 uses an analog signal format and runs on 9V at 100mA. It is compatible with other pedals in the EHX Machine series, so if you already own a B9 or C9 organ machine, the SYNTH9 fits right into the same workflow. The blendable dry/wet signal lets you mix your clean guitar tone with the synth voice, which is great for creating layered textures.

The downside is that there are no presets and no expression pedal input. If you want to change sounds mid-song, you are bending down to twist knobs. Some users have also reported reliability issues, with a few units developing faults within months of purchase. EHX offers a one-year warranty, but it is worth buying from a retailer with a good return policy.

Who Should Buy the EHX SYNTH9

This is the best synth pedal for guitarists who want authentic vintage synthesizer sounds without any complexity. If you love the tones of classic MOOG, ARP, and Oberheim synths and want to recreate those sounds with your guitar, the SYNTH9 nails it better than almost anything else at this price.

The SYNTH9 is also great for 70s and 80s style soundtrack work. I have used it to layer synth pads under acoustic guitar for film projects, and the results are convincing enough that no one has ever guessed it was a guitar pedal.

Who Should Skip It

If you need preset recall for live performance, the SYNTH9 will frustrate you. Every sound change requires manual knob adjustments. Players who rely on fast lead passages may also find the tracking falls behind during rapid-fire runs.

Those concerned about reliability should consider the BOSS alternatives, which carry a five-year warranty compared to EHX’s one-year coverage. If you play out regularly, the extra warranty protection may be worth the investment.

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4. Electro-Harmonix Bass Mono Synth – Best Budget Bass Synth

BUDGET PICK
Electro-Harmonix Bass Mono Synth Bass Synthesizer Pedal

Electro-Harmonix Bass Mono Synth Bass Synthesizer Pedal

★★★★★★★★★★3.7 / 5

11 synth sounds

User preset memory

Expression pedal input

Compact size

MIDI USB

Bass optimized

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Pros

  • 11 different synth sounds with preset capability
  • Expression pedal input for real-time control
  • Compact 4.75 x 4 inch size
  • Create and save 11 user presets
  • Power adapter included
  • MIDI USB connectivity

Cons

  • Inconsistent note tracking
  • Monophonic only no chords
  • Highly polarized reviews
  • Requires precise clean playing technique
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The EHX Bass Mono Synth is the most affordable entry point into dedicated bass synth tones on this list, and I have a soft spot for what it tries to do. With 11 different synth sounds and the ability to save a custom preset for each one, it offers a lot of tonal variety for bass players who do not want to spend $300 or more.

When the tracking locks in, the Bass Mono Synth sounds fantastic. The sub-octave thump and filter sweeps are perfect for funk and electronic bass lines, and the expression pedal input lets you open up the filter in real time for those classic synth bass wah effects. At just 4.75 x 4 inches, it takes up minimal pedalboard space.

The technical design uses a digital signal format at 9V and 125mA, with MIDI USB connectivity for additional control options. The 11 presets cover a useful range from sub-shaking bass tones to more aggressive, resonant filter sounds. The power adapter is included, which is a nice touch at this price point.

The elephant in the room is tracking. The Bass Mono Synth requires very precise, clean playing technique to track reliably. If your technique is sloppy or you have any sympathetic string vibration, you will get frequency flutter and glitchy artifacts. The 19 percent one-star rating tells the story: this pedal divides players sharply. Some love it, others cannot get it to work for them.

Who Should Buy the EHX Bass Mono Synth

This is the best synth pedal for bass players on a budget who are willing to adapt their playing technique. If you play clean, precise lines and want access to 11 different synth bass tones without spending a fortune, the Bass Mono Synth delivers. It works particularly well for funk, soul, and electronic styles where you are playing focused single-note lines.

Bassists who already use expression pedals will appreciate the EXP input for real-time filter control. Pair it with a volume pedal or expression pedal, and you can create dynamic, evolving synth bass textures that respond to your foot movements.

Who Should Skip It

If you play aggressively or use a lot of ghost notes and percussive techniques, the tracking will fight you constantly. Players who need rock-solid, dependable tracking for live performance should look at the MXR Bass Synth instead, which handles aggressive playing far better.

Bassists who want chordal synth textures should also pass on this one. The monophonic design means it cannot process more than one note at a time. For polyphonic synth needs, you need a different pedal entirely.

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5. Electro-Harmonix Mono Synth for Guitar – Budget Guitar Synth

BUDGET PICK
Electro-Harmonix Mono Synth Guitar Synthesizer Pedal

Electro-Harmonix Mono Synth Guitar Synthesizer Pedal

★★★★★★★★★★3.7 / 5

11 synth sounds

User preset memory

Expression pedal input

Analog signal format

Compact size

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Pros

  • 11 synth sounds with preset capability
  • Expression pedal input for real-time control
  • Compact footprint
  • Analog signal format
  • Tracks better than some MIDI pickup systems
  • Good for ambient and looping

Cons

  • Monophonic only no chords
  • Tracking issues with fast playing
  • Highly polarized reviews
  • Limited sound variety beyond bass and lead tones
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The EHX Mono Synth for guitar is the six-string sibling of the Bass Mono Synth, sharing the same 11-sound architecture and preset capability but optimized for guitar frequency ranges. I tested this pedal extensively for ambient and experimental work, and in the right context, it produces genuinely interesting textures that you cannot get from any other pedal at this price.

The analog signal format gives the sounds a warmth and character that some digital pedals struggle to match. When you dial in a thick filter sweep on a sustained note, the result is a rich, evolving pad that works beautifully under atmospheric arrangements. The preset memory means you can save your favorite settings and recall them quickly.

Like its bass counterpart, the Mono Synth runs on 9.6V at 125mA and includes an expression pedal input. The 11 sounds lean heavily toward synth bass and wobbly lead tones, with less variety than I would like for the price. The compact size at 4.75 x 4 inches is a genuine advantage for crowded pedalboards.

The tracking is the recurring issue. Just like the bass version, the guitar Mono Synth requires precise technique to track reliably. Fast lead playing, double stops, and complex chords will cause problems. The reviews are highly polarized, with 54 percent five-star ratings and 17 percent one-star ratings, suggesting that user experience depends heavily on playing style and expectations.

Who Should Buy the EHX Mono Synth Guitar

This is a solid choice for ambient and experimental guitarists who play slow, sustained lines and want an affordable entry into synth textures. If you build loop-based soundscapes or create atmospheric film score material, the Mono Synth can produce unique tones that complement traditional guitar sounds nicely.

Players who already own other EHX pedals will find the build quality and control layout familiar. The preset memory and expression pedal input give you more control than you might expect at this price point.

Who Should Skip It

Lead guitarists who play fast passages should look elsewhere. The tracking simply cannot keep up with rapid-fire single-note runs, and you will experience dropped notes and glitches. Players who need chordal synth textures should also avoid this monophonic-only pedal.

If you are sensitive to build quality concerns or potential reliability issues, the polarized review pattern is worth noting. A significant percentage of users have had negative experiences, so buying from a retailer with a solid return policy is essential.

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6. Electro-Harmonix Superego Synth Engine – Best for Sustain and Pads

TOP RATED
Electro Harmonix Superego Synth Engine Guitar Effects Pedal

Electro Harmonix Superego Synth Engine Guitar Effects Pedal

★★★★★★★★★★4.1 / 5

Controllable glissando

Infinite sustain

Effects loop

Latch mode with layer feature

Analog signal format

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Pros

  • Sustains notes and chords indefinitely for pad textures
  • Controllable glissando for expressive synth sweeps
  • Effects loop for inserting other effects
  • Latch mode stacks multiple sounds
  • Wide range sound profile

Cons

  • Tracking inconsistencies with certain notes
  • Requires specific playing techniques
  • No preset memory
  • Limited to sustain and glissando functions
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The EHX Superego is not a traditional synth pedal in the sense of generating new oscillator-based tones. Instead, it takes your guitar signal and sustains it indefinitely, creating lush pad textures and synth-like drones. I have used the Superego extensively for ambient work, and its ability to hold a chord forever while I play lead lines over the top is genuinely magical.

The glissando function is where the Superego earns its synth credentials. When engaged, sustained notes pitch-bend smoothly between each other, creating those classic portamento sweeps that define vintage synthesizer performances. Combined with the latch mode that lets you stack multiple layers of sustained sound, you can build entire orchestral textures from a single guitar.

The effects loop is a standout feature that sets the Superego apart from other sustain pedals. You can route the wet sustained signal through external effects like reverb, delay, or modulation before it reenters the pedal, giving you enormous sound design flexibility. The pedal uses an analog signal format and runs on 9.6V at 200mA.

Where the Superego falls short is tracking consistency. Some users report that certain notes and intervals do not sustain as cleanly as others, requiring specific playing techniques to get optimal results. There is also no preset memory, so any sound you dial in is lost when you power down.

Who Should Buy the EHX Superego

This is the best synth pedal for ambient guitarists, loopers, and sound designers who work with sustained textures. If your music relies on building layers of sound and creating evolving pad tones, the Superego is a unique tool that no other pedal on this list replicates exactly.

The Superego is also excellent for experimental musicians who want to process their sustained sounds through external effects. The effects loop opens up creative possibilities that go far beyond simple sustain.

Who Should Skip It

If you want traditional synth sounds like oscillator tones, filter sweeps, and arpeggiator patterns, the Superego is not the right tool. It is fundamentally a sustain and glissando engine, not a full synthesizer voice generator.

Players who need reliable, consistent tracking across the entire fretboard may find the Superego frustrating. The inconsistent sustain on certain notes requires workarounds and adjustments to playing technique.

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7. Electro-Harmonix Bass Micro Synthesizer – Best Analog Bass Synth

TOP RATED
Electro-Harmonix Bass Micro Synthesizer Analog Microsynth Pedal

Electro-Harmonix Bass Micro Synthesizer Analog Microsynth Pedal

★★★★★★★★★★4.6 / 5

All analog design

Bass optimized

3-pole resonant filter

4-voice mixer

Start and stop filter frequency sliders

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Pros

  • All analog design for authentic synth tones
  • Optimized specifically for bass guitar range
  • 3-pole analog resonant filter
  • 4-voice mixer blends sub octave original octave up and square wave
  • Start and stop filter frequency sliders for precise sweep control

Cons

  • Higher price point
  • Requires external power supply
  • No preset memory
  • Larger enclosure
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The EHX Bass Micro Synthesizer is a legend in the bass effects world, and after spending time with one, I understand why it has maintained its reputation for so long. This is a fully analog synthesizer in pedal form, designed specifically for the bass guitar frequency range. The sound is thick, warm, and undeniably powerful.

The 4-voice mixer section is where the magic happens. You can blend a sub octave, your original signal, an octave up, and a square wave in any combination you want. This gives you enormous control over the harmonic content of your synth bass tone. Combined with the 3-pole analog resonant filter, you can create everything from subtle thickness to full-on analog bass synth explosions.

The start and stop filter frequency sliders give you precise control over the filter sweep direction and speed. This is a feature I wish more modern pedals included, as it lets you dial in exact filter movements that respond musically to your playing. The all-analog signal path has a warmth and character that digital pedals spend a lot of effort trying to emulate.

The tradeoffs are real, however. The Bass Micro Synthesizer requires a 4V power supply, which is unusual and means you cannot just plug it into any standard 9V pedal power supply. There is no preset memory, and the enclosure is relatively large at 8 x 7 x 3.5 inches. The price is also on the higher end of the spectrum.

Who Should Buy the EHX Bass Micro Synthesizer

This is the best analog synth pedal for bass players who want authentic, warm analog synth tones with deep filter control. If you play funk, fusion, or electronic music and want a bass synth that sounds like a real analog synthesizer rather than a digital approximation, the Micro Synthesizer delivers.

Bassists who appreciate hands-on, slider-based control will love the tactile interface. Every parameter is right there on the surface, with no menu diving or hidden functions. It is a pedal designed for players who like to sculpt their sound in real time.

Who Should Skip It

If you need preset recall or MIDI control, the Micro Synthesizer has neither. Every sound change is manual. Players with limited pedalboard space may also find the large enclosure impractical.

The unusual 4V power requirement is a genuine inconvenience. You will need to use the included power supply rather than sharing a standard 9V daisy chain with your other pedals. Plan your power distribution accordingly.

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8. EarthQuaker Devices Bit Commander V2 – Best Analog Octave Synth

TOP RATED
EarthQuaker Devices Bit Commander V2 Analog Octave Synth Guitar Effects Pedal

EarthQuaker Devices Bit Commander V2 Analog Octave Synth Guitar Effects Pedal

★★★★★★★★★★4.4 / 5

Monophonic analog synth

4 octaves of square wave

True bypass

Hand built in Akron Ohio

Sub octave and octave up

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Pros

  • Four octaves of vintage square wave synth tones
  • Intuitive interface for adding and subtracting octaves
  • Produces ripping sub-octave thump and swelling octave up
  • Makes single notes sound like vintage synths
  • True bypass hand built in Akron Ohio
  • Limited lifetime warranty

Cons

  • Monophonic only no chords
  • Limited stock availability
  • No preset memory
  • No expression pedal input
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The EarthQuaker Devices Bit Commander V2 is the pedal I plug in when I want my guitar to sound like a vintage video game console having a meltdown. It is a monophonic analog synthesizer that stacks four octaves of square wave tones, and the result is a gloriously fat, retro synth sound that cuts through any mix.

The beauty of the Bit Commander is its simplicity. Instead of complex envelope controls and oscillator routing, you get five knobs that each control one octave layer. You add or subtract the sub octave, the octave down, the base tone, the octave up, and the volume. That is it. Within seconds of plugging in, I was creating massive analog synth walls that sounded like they came from a 1980s arcade.

The sub-octave thump on the Bit Commander is particularly impressive. When you crank the sub knob, single notes develop a chest-rattling low end that you feel as much as hear. The transformer-based octave up adds a bright, singing quality that complements the darker sub frequencies perfectly. The pedal is hand-built in Akron, Ohio, with true bypass switching and a limited lifetime warranty.

The limitation is that the Bit Commander is strictly monophonic. Play a chord, and you get a chaotic mess of competing frequencies. This pedal wants single-note lines, and it rewards them with some of the most satisfying analog synth tones available in any pedal format. At 9V and just 25mA, it is also one of the most power-efficient pedals on this list.

Who Should Buy the EarthQuaker Bit Commander V2

This is the best analog synth pedal for guitarists who play lead lines, riffs, and single-note passages and want thick, vintage square wave tones. If you play stoner rock, doom, experimental, or any genre that rewards huge monophonic synth sounds, the Bit Commander is a creative powerhouse.

Players who value build quality and simplicity will appreciate the hand-built construction and intuitive control layout. Every knob does exactly what it says, and there are no menus to navigate. It is a plug-and-play pedal that rewards experimentation.

Who Should Skip It

If your playing style relies on chords, the Bit Commander is not for you. The monophonic design means it cannot process multiple notes cleanly. Players who need preset recall or expression pedal control should also look elsewhere, as the Bit Commander has neither feature.

Stock availability can be limited, with only a handful of units typically in stock at major retailers. If you find one, it may be worth grabbing before it sells out.

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9. Keeley Synth-1 Reverse Attack Fuzz Wave Generator – Best Experimental Synth

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Keeley Synth-1 Reverse Attack Fuzz Wave Generator Pedal

Keeley Synth-1 Reverse Attack Fuzz Wave Generator Pedal

★★★★★★★★★★4.6 / 5

Synth wave generator

Reverse attack volume swell

Chaos switch

Filter control

Wave selector footswitch

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Pros

  • Synth wave generator creates fuzzed-out single note synth sounds
  • Reverse attack volume swell simulates slow-gear effects up to 1.5 seconds
  • Chaos switch for wild octave and triggering variations
  • Filter knob shapes EQ and tone
  • Wave selector footswitch for on-the-fly mode changes
  • Two year warranty

Cons

  • Note tracking can be unpredictable
  • Some modes produce glitches rather than usable tones
  • Limited stock availability
  • Monophonic design
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The Keeley Synth-1 is the wildest pedal on this list, and I mean that as a compliment. It is a fuzz-based wave generator that turns your guitar into a snarling, chaos-prone synth monster. The Reverse Attack function alone is worth the price of admission, swelling your notes from silence to full volume over up to 1.5 seconds for those classic slow-gear effects.

The Chaos Switch is where the Synth-1 gets really interesting. Flip it on, and the pedal changes its dimensional triggering and octave behavior in ways that are sometimes musical and sometimes completely unhinged. I have spent hours exploring the sounds this switch unlocks, and I am still finding new textures. It is not a pedal for players who want predictable, repeatable sounds.

The Filter knob lets you shape the EQ and tone of the fuzz wave, going from dark and buzzy to bright and cutting. The Wave Selector footswitch lets you change between wave modes on the fly without taking your hands off the guitar. The Synth-1 runs on 9V at 100mA and carries a two-year parts and labor warranty.

Tracking is the main concern. The Synth-1 can be unpredictable, especially outside certain note ranges. Some modes produce more glitches and static than usable tones, which may be exactly what experimental players want but will frustrate anyone looking for clean, reliable synth voices. The 80 percent five-star rating suggests most users embrace the chaos.

Who Should Buy the Keeley Synth-1

This is the best synth pedal for experimental guitarists who want unpredictable, chaotic, and inspiring sounds. If you play noise rock, experimental, ambient, or any genre that rewards sonic exploration, the Synth-1 is a wellspring of creative possibilities. The reverse attack swell alone makes it worth considering.

Players who enjoy fuzz tones and want to push them into synth territory will love what the wave generator does. It bridges the gap between fuzz and synth in a way that few other pedals attempt.

Who Should Skip It

If you need reliable, predictable tracking for live performance, the Synth-1 will fight you. Its chaotic nature is a feature, not a bug, but that means it is not suited for players who want consistent results every time they step on the switch.

Traditionalists who want classic analog synth tones should look at the EHX SYNTH9 or Bit Commander instead. The Synth-1 is a fuzz-based design that sounds different from oscillator-based synth pedals.

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10. MXR Bass Synth Effects Pedal – Best for Funk Bass

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MXR® Bass Synth

MXR® Bass Synth

★★★★★★★★★★4.4 / 5

Designed with Ian Martin Allison

8 presets

Sub octave and envelope

Modulation effects

Vintage analog-style vibes

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Pros

  • Designed in collaboration with Ian Martin Allison
  • Thunderous sub-octave and expressive envelope
  • Lush modulation effects
  • Killer tracking and sustain
  • Eight different presets for quick access
  • Warm dynamic low-end focused sound

Cons

  • Some quality concerns reported
  • No MIDI connectivity
  • Higher price point
  • Limited detailed specifications available
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The MXR Bass Synth is the newest pedal on this list, and it was designed in collaboration with Ian Martin Allison, a bassist known for his funk and groove playing. That pedigree shows in every preset. This pedal was built by bass players, for bass players, and it delivers the kind of warm, dynamic, low-end-focused synth tones that define classic funk and soul records.

The eight presets cover an impressive range of bass synth territory. From thunderous sub-octave tones that shake the floor to expressive envelope filter sounds that respond to your playing dynamics, each preset is musical and immediately usable. The modulation effects add movement and depth, and the tracking is consistently reliable even with aggressive playing.

I found the envelope follower particularly impressive. It responds to your pick attack and playing dynamics in real time, opening and closing the filter based on how hard you play. This is exactly the kind of expressive control that bass players need for funk grooves, and the MXR handles it better than many pedals at twice the price.

The MXR Bass Synth runs on 9V at 330mA and carries a one-year Dunlop warranty. The build quality is solid, as you would expect from MXR, though some users have reported occasional quality concerns. With 77 percent five-star ratings and 55 reviews, the overall user satisfaction is high.

Who Should Buy the MXR Bass Synth

This is the best synth pedal for bass players who want funk-ready tones with excellent tracking and dynamic response. If you play funk, soul, R&B, or any groove-based music, the MXR Bass Synth was designed specifically for your needs. The eight presets cover the essential funk bass synth sounds without overwhelming you with options.

Bassists who want reliable tracking during aggressive playing will appreciate how well this pedal handles fast, dynamic performances. Unlike the EHX Bass Mono Synth, the MXR does not require perfect technique to sound good.

Who Should Skip It

If you need MIDI integration or preset editing via software, the MXR Bass Synth has neither. The eight presets are what you get, with no deep editing capabilities. Players who want granular control over every synth parameter should look at the BOSS SY-200 instead.

Guitarists looking for a synth pedal should also pass on this one. The MXR Bass Synth is optimized for bass frequencies and will not translate well to standard guitar ranges.

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How to Choose the Best Synth Pedal – Buying Guide

Choosing the right synth pedal comes down to understanding your needs as a player and matching them to the right technology. After testing every pedal on this list, I have identified the key factors that should guide your decision.

Tracking Type: Polyphonic vs Monophonic

Tracking is the single most important factor in any synth pedal. Polyphonic pedals like the BOSS SY-1 and SY-200 can analyze and convert multiple notes simultaneously, meaning you can play full chords and have every note converted to a synth voice. Monophonic pedals like the Bit Commander and EHX Mono Synth can only process one note at a time.

If you play rhythm guitar or want to use synth pads under your playing, you need polyphonic tracking. If you play lead lines and single-note passages, a monophonic pedal may actually sound better since it can focus all its processing power on one note. Consider your playing style honestly before choosing.

Presets and Programmability

If you perform live and need to switch between different synth sounds during a set, preset memory is essential. The BOSS SY-200 leads the pack with 128 preset slots and full MIDI I/O. The EHX Mono Synth pedals offer 11 preset memories, which is decent for the price. Pedals without presets like the SY-1 and Bit Commander require manual knob adjustments for every sound change.

Signal Chain Placement

Synth pedals typically go early in your signal chain, right after your tuner and any buffer. Placing distortion or modulation before your synth pedal can confuse the tracking algorithm, since it relies on a clean input signal to analyze pitch and dynamics. I run my synth pedals first in the chain, before dirt and modulation, for the most reliable tracking.

If you are running a stereo rig, check whether your synth pedal has stereo outputs. Most pedals on this list are mono only, which means you will need to split the signal later in the chain if you want stereo width.

Power Supply Requirements

Power consumption varies widely among synth pedals. The Bit Commander sips just 25mA, while the BOSS SY-1 and SY-200 each need 300mA. The MXR Bass Synth requires 330mA, and the EHX Bass Micro Synthesizer needs an unusual 4V supply. Make sure your power supply can handle the current draw of your chosen pedal, especially if you are running a large pedalboard on a single isolated supply.

Synth Pedal vs Real Synthesizer

This is one of the most common questions I see on forums. A synth pedal is not a replacement for a real synthesizer, but it serves a different purpose. A synth pedal lets you create synth sounds using your existing guitar technique and instrument. A real synthesizer gives you far more sound design flexibility but requires you to learn a new instrument.

For guitarists who want to add synth textures to their existing rig, a synth pedal is the practical choice. For producers building an electronic music setup, a real synthesizer (or software synth) offers deeper sound design capabilities. If you are building a complete electronic music setup, you might also consider exploring our guide to the best hardware samplers to round out your sonic palette.

Synth Pedal FAQ

What is the best synth pedal?

The best synth pedal depends on your needs. The BOSS SY-1 is the best overall value with excellent polyphonic tracking and over 100 sounds. The BOSS SY-200 is best for presets and MIDI control. The EHX SYNTH9 delivers the most authentic vintage synth tones. The EarthQuaker Bit Commander is the best analog octave synth for single-note lines.

What is the holy grail of guitar pedals?

The holy grail of guitar pedals is subjective and depends on what tone you seek. Many players consider the Ibanez Tube Screamer, Klon Centaur, or Strymon Timeline as holy grail pedals in their respective categories. For synth pedals specifically, the Meris Enzo and BOSS SY-1 are often cited as the most sought-after options.

What 5 pedals should every guitarist have?

Every guitarist should consider these 5 essential pedals: (1) Tuner such as the Boss TU-3, (2) Overdrive or Distortion like a Tube Screamer, (3) Delay such as the Boss DD-8, (4) Reverb like the Boss RV-6, and (5) Modulation such as chorus or phaser. A synth pedal like the BOSS SY-1 can supplement or replace several of these for players who want expanded tonal options.

What is the best sounding synthesizer?

The best-sounding synthesizer depends on your needs. For a synth pedal with convincing tones, the EHX SYNTH9 delivers the most authentic vintage synth sounds. For polyphonic control and modern versatility, the BOSS SY-1 and SY-200 offer excellent sound quality. For a full synthesizer experience, analog instruments from Moog, Sequential, and Korg remain the industry standard.

Are synth pedals worth it?

Yes, synth pedals are worth it for guitarists and bassists who want to add synthesizer textures to their sound without buying and learning a separate instrument. They are especially valuable for live performance where seamless switching between guitar and synth tones is needed, and for recording where you want both guitar and synth tones from a single performance.

Can synth pedals play chords?

Polyphonic synth pedals like the BOSS SY-1 and SY-200 can play chords and convert every note in a chord into a synth voice simultaneously. Monophonic synth pedals like the EarthQuaker Bit Commander and EHX Mono Synth can only process one note at a time and cannot play chords. Always check whether a pedal is polyphonic or monophonic before buying if chordal playing is important to you.

What synth pedal has the best tracking?

The BOSS SY-1 and SY-200 have the best polyphonic tracking of any synth pedals on the market, with virtually no latency and reliable chord processing. For bass, the MXR Bass Synth offers excellent tracking that handles aggressive playing better than most competitors. The EHX SYNTH9 also tracks well within its monophonic range up to the 23rd fret.

Do synth pedals work with bass?

Yes, many synth pedals work with bass guitar. The BOSS SY-1 and SY-200 are designed for both guitar and bass. The EHX Bass Mono Synth and MXR Bass Synth are specifically optimized for bass frequencies. The EHX Bass Micro Synthesizer is a fully analog bass synth that has been a studio and live staple for decades. Always check the frequency range and tracking specifications before using a guitar-focused pedal with bass.

Final Thoughts on the Best Synth Pedals for 2026

The best synth pedals give you an entirely new sonic palette without forcing you to learn a new instrument. After testing all ten pedals on this list, the BOSS SY-1 remains my top recommendation for most players because it delivers excellent polyphonic tracking, over 100 sounds, and proven reliability in a compact, pedalboard-friendly format. For players who need presets and MIDI, the BOSS SY-200 is worth the extra investment.

If vintage analog synth tones are your priority, the EHX SYNTH9 and EarthQuaker Bit Commander offer sounds that no digital pedal can quite replicate. Bass players should look closely at the MXR Bass Synth for funk grooves or the EHX Bass Micro Synthesizer for all-analog warmth. Whatever your style and budget, there is a synth pedal on this list that will transform your tone and inspire new musical ideas for years to come.

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