Electro Harmonix Mono Synth, (Used)

The Electro-Harmonix Mono Synth is a compact guitar synthesizer pedal that turns a standard electric guitar signal into a range of monophonic synth sounds without needing MIDI, special pickups or guitar modifications. It is ideal for guitarists who want to add synth bass lines, lead sounds, vintage-style analogue textures, octave-style voices and experimental electronic tones to their pedalboard. This used example is in Excellent Condition and includes the original box.

---

At A Glance

---

Condition Overview

Excellent Condition – Very light signs of use.

This used Electro-Harmonix Mono Synth is in Excellent Condition, making it a strong choice for players who want a clean used synth pedal with excellent value compared with buying new.

---

What’s Included?

✔ Electro-Harmonix Mono Synth Pedal
✔ Original Box

---

Condition Notes

This pedal is in Excellent Condition with only very light signs of previous use.

---

Fair Deal Inspection & Assessment

Before leaving Fair Deal Music, this used pedal will be checked to make sure it is ready for its next owner. Our pedal inspection includes:

• Input checked
• Output checked
• Footswitch tested
• Controls tested
• Bypass checked
• Power operation checked
• General functionality assessed

---

Service / Testing Work

This Electro-Harmonix Mono Synth has been tested as part of our used pedal inspection process. The footswitch, controls, input, output and power operation are checked so the pedal can be used confidently in a pedalboard, studio setup or live rig.

---

Why Choose The Electro-Harmonix Mono Synth?

Guitar Synth Sounds Without MIDI Or Special Pickups

The Mono Synth is designed to work with a standard guitar signal, so you do not need a MIDI pickup, hex pickup or modified instrument. Electro-Harmonix describes it as working with guitar without modifications, special pickups or MIDI implementation, making it a far more straightforward way to add synth sounds to a normal guitar rig.

11 Synth Voices In One Compact Pedal

The Mono Synth gives you 11 monophonic synth sounds, covering everything from vintage-style synth textures to stacked voices and lead sounds. Electro-Harmonix describes the pedal as transforming your guitar into eleven synthesizers, with sounds ranging from vintage synth emulations to fat stacked voices and soaring lead tones.

This makes it a creative tool for guitarists who want sounds that move beyond standard overdrive, modulation and delay effects.

Simple Hands-On Controls

The Mono Synth is designed to be quick to use. The DRY control adjusts the dry guitar volume at the Synth Output, while SYNTH adjusts the synthesizer volume, allowing you to blend the two signals to suit the part.

This is useful because some players may want a full synth-only sound, while others may prefer to keep a little of the original guitar attack mixed in for definition.

Sensitivity Control For Tracking Response

The SENS control helps tailor the pedal’s response to your guitar and playing style. This is especially important with synth pedals, because cleaner picking, consistent dynamics and suitable sensitivity settings can make a big difference to tracking and note definition.

Expression Pedal Input

The Mono Synth includes an EXP input, allowing real-time expressive control with a compatible expression pedal. This makes it much more performance-friendly, especially for players who want filter-style movement, sweeps or evolving synth textures during a live set.

Save And Recall Presets

A major practical benefit of the Mono Synth is the ability to create, save and recall 11 user presets, one for each synth sound. This is useful for live players who want reliable settings for specific songs and for studio users who want to recall favourite sounds quickly.

---

Comparison Against Popular Alternatives

Electro-Harmonix Mono Synth vs Boss SY-1

The Boss SY-1 offers a wide range of synth sounds and is very immediate for players who want lots of preset-style options. The Electro-Harmonix Mono Synth is a strong alternative for players who want a compact EHX synth voice set with preset storage and straightforward control over dry/synth blend.

Choose the Mono Synth if you want focused monophonic guitar synth sounds with user preset recall. Choose the SY-1 if you want a broader modern synth pedal with a larger sound selection.

Electro-Harmonix Mono Synth vs Electro-Harmonix Synth9

The Synth9 focuses on recreating classic synthesizer-style sounds and is part of EHX’s “9” series. The Mono Synth is more direct and pedalboard-friendly for players who want multiple monophonic synth sounds, preset saving and expression pedal control in a compact format.

Electro-Harmonix Mono Synth vs Pitch Shifter Pedals

A pitch shifter can add octave and harmony effects, but it will not fully transform the guitar into synth-style voices. The Mono Synth is the better choice if the goal is electronic-style tones rather than standard pitch effects.

Electro-Harmonix Mono Synth vs Multi-Effects Units

A multi-effects unit may include synth-style sounds, but the Mono Synth gives dedicated hands-on control in a single pedal. It is easier to add to an existing board without changing the rest of your setup.

---

Who Is It For?

Beginner Players

A complete beginner may find a guitar synth pedal more specialised than a basic overdrive, delay or reverb. However, it can still be a fun creative tool for players who are interested in electronic sounds and experimental playing.

Intermediate Players

Intermediate players will get a lot from the Mono Synth. It opens up new sounds for songwriting, recording, looping and live performance without needing a separate synth or MIDI guitar setup.

Professional Players

Professional players can use the Mono Synth for stage parts, studio layering, sound design, hooks, intros, transitions and creative moments where a normal guitar tone is not enough.

Suitable Genres And Uses

• Synth rock
• Indie
• Alternative
• Pop
• Electronic music
• Ambient
• Worship textures
• Experimental guitar
• Studio production
• Looping
• Bass-style synth lines
• Lead synth parts
• Sound design

---

Why Choose A Guitar Synth Pedal?

A guitar synth pedal lets you access synth-style sounds while playing the instrument you already know. Instead of learning keyboard parts or setting up MIDI conversion, you can create electronic tones directly from your guitar.

This is especially useful for players who write or perform in bands where one guitar needs to cover extra sonic space. A synth pedal can add bass-style support, lead hooks, atmospheric swells or electronic textures that would normally require another instrument.

The Mono Synth is monophonic, meaning it is designed for single-note lines rather than full chords. That makes it especially effective for riffs, leads, melodies, bass-style parts and controlled melodic phrases.

Looking for advice on choosing the right guitar synth pedal? Our experienced team of musicians can help by phone, online or in-store.

---

Story & Context

Electro-Harmonix has a long history of producing creative effects that push guitar sounds into new territory, from classic fuzz and modulation pedals through to pitch, synth and sound-design units. The Mono Synth fits neatly into that tradition by giving guitarists a compact way to access synthesizer-inspired tones without needing a separate synth rig.

It is particularly useful for players who like the idea of electronic textures but still want the immediacy of a stompbox. With its compact size, preset recall and standard guitar input, it brings synth sounds into a familiar pedalboard format.

---

Technical Specifications

Specifications are based on available Electro-Harmonix product information and retailer technical details.

---

Power Requirements

The Electro-Harmonix Mono Synth is designed for use with an EHX 9.6VDC-200mA power supply and has a listed current draw of 125mA at 9VDC.

Use a suitable regulated pedal power supply with the correct polarity and current capacity.

---

Fair Deal Music Verdict

★★★★★ 5/5

The Electro-Harmonix Mono Synth is a brilliant used choice for guitarists who want to add synth sounds without committing to a complex MIDI or keyboard-based setup. Its 11 synth voices, dry/synth blend, preset recall and expression input make it far more practical than a simple novelty effect. For players interested in electronic textures, experimental lead lines, studio layering or creative live sounds, this Excellent Condition boxed example offers strong value and plenty of inspiration.

---

Why Buy From Fair Deal Music?

Choosing Fair Deal Music means buying from a passionate team of musicians who genuinely understand the products we sell. Whether you're purchasing your first instrument, upgrading your current setup or searching for something special, we're here to help you make the right choice with friendly advice and expert support.

When you shop with Fair Deal Music, you can buy with confidence thanks to:

Expert advice from knowledgeable musicians
Carefully checked new, used, pre-owned and ex-display equipment
Competitive prices on leading music brands
Secure UK-wide delivery
Flexible finance options available subject to status
Friendly support before and after your purchase
A trusted independent UK music retailer with decades of experience

Trade In. Trade Up. Save More.

Thinking about upgrading? Your next piece of gear could cost less than you think.

We're always happy to consider part exchanges and trade-ins on a wide range of musical instruments and equipment. Whether you're looking to upgrade your guitar, keyboard, amplifier, drum kit or studio gear, your existing equipment could help reduce the cost of your next purchase.

Simply get in touch with our team for a no-obligation valuation, and we'll be happy to discuss the options available.

It's an easy way to unlock the value of the gear you no longer use while making your next instrument even more affordable.

---

FAQ

Is the Electro-Harmonix Mono Synth easy to use?

Yes. It is designed to work with a standard guitar signal and has hands-on controls for blending the dry and synth sounds, adjusting sensitivity and shaping the selected synth voice.

Does it need a MIDI pickup?

No. The Mono Synth is designed to work without MIDI, special pickups or guitar modifications.

Is it monophonic or polyphonic?

It is monophonic, so it is best suited to single-note lines, riffs, melodies, synth bass-style parts and lead sounds rather than full chords.

Can I save sounds on the pedal?

Yes. The Mono Synth allows you to create, save and recall 11 user presets, one for each synth sound.

Does it work well for live performance?

Yes. The preset function, compact format and expression pedal input make it useful for live players who need repeatable synth sounds during a set.

Can it be used for recording?

Yes. It is excellent for studio layering, hooks, intros, electronic textures and adding synth-style sounds without needing a keyboard part.

Where should it go in a pedal chain?

Guitar synth pedals often track best when placed early in the chain, before heavy distortion, modulation or time-based effects. Clean, accurate playing will also help the pedal respond more reliably.

Is it suitable for bass guitar?

This model is designed as a guitar synth pedal. Bass players may prefer checking compatibility carefully or looking at bass-specific synth options if they want the most reliable low-register tracking.