Electro-Harmonix|SKU: EHX-GUITMONOSYN

Electro Harmonix Guitar Mono Synth Effects Pedal Includes Power Supply

Sale price $151.50 Regular price $201.50

Product highlights

  • Mono Synth designed to work on guitar without modifications 
  • Features eleven great sounding, mono synth sounds
  • Easy to use controls let you dial in sound quickly
  • EXP pedal input for real-time expressive control with foot
  • Create, save and recall eleven user presets

In the box

  • Electro Harmonix Guitar Mono Synth Effects Pedal with Control Knob, Bypass Footswitch and Status LED
  • 9.6VDC-200mA Power Adapter
  • Limited 1-Year Warranty

Free standard shipping

*Orders placed before 1 PM EST Mon - Thur will ship the same day. Orders placed beyond these hours will be shipped the next business day. Exclusions apply. See shipping policy

Free Local Pickup

Please call for store stock availability. Requests made before 2:30 PM EST can be available for next-day pickup. Learn more

Questions? We’re Here to Help

Call or email one of our experts.

Transform your guitar into eleven great sounding synthesizers. The EHX Mono Synth transforms your guitar into eleven great sounding synthesizers from vintage synth emulations to fat, stacked voices to soaring lead sounds and more. The Electro Harmonix Guitar Mono Synth Effects Pedal is designed to work on guitar without any modifications, special pickups or MIDI implementation. Its intuitive layout makes it easy to use and easy to dial in cool sounds quickly. The pedal’s DRY dial adjusts the dry guitar volume at the Synth Output while SYNTH controls the volume of the synthesizer sound at the Synth Output. Used together they let you create just the right mix. The SENS control, short for sensitivity, adjusts how playing dynamics trigger the synthesizer and allows you to fine-tune the pedal’s response to your guitar and playing style. With the CTRL knob you can adjust a key parameter for each of the eleven synth types. It varies depending on the preset and provides extra tweakability for customizing your sound. There’s also an EXP input which lets you control an entirely different parameter in real-time with an expression pedal. Using the built-in Preset footswitch, a user customizable preset for each of the eleven synth sounds can be created, saved and recalled. The factory presets are also easy to restore should you wish to.

Dry Volume Knob

Controls the volume of the untreated bass signal present at the Synth Output jack.

Synth Volume Knob

Controls the overall volume of the synthesizer sound at the Synth Output jack.

SENS Knob

Adjusts the gain of the input signal before the signal hits the Mono Synth’s trigger block.

Control Knob

Controls a specific parameter for each synth type.

Dry Output Jack

The dry output jack produces the signal present at the input jack.

Synth Output Jack

Produces the mix set by the DRY and SYNTH volume controls.

Type Knob

Selects the effect type.

Expression Jack

Accepts a TRS cable from a standard passive expression pedal or control voltage on TS cable.

Input Jack

Plug your instrument or the output of effects pedal into this 1/4-inch jack.

Shipping & Returns

  • Same Day Shipping


    All orders placed by 1PM( EST), Monday through Thursday, and by 11AM (EST) on Friday, are shipped same day. Orders placed outside these times will ship the next business day. We do not ship internationally or to Puerto Rico, Guam and other US territories at this time. For more details click here.

  • Free Standard Shipping


    We offer free standard shipping on thousands of items within the continental USA (this does not include Alaska and Hawaii).



  • Easy returns


    If you're not happy with your purchase for any reason, our flexible 30-day free return policy makes it easy to get a full refund. Click here to view our return policy.


Frequently Asked Questions

How do I return an item?

Returns are incredibly simple. Please log into your account, find your item you wish to return and follow the prompts to make a return. If you do not have an account, click here to find your order and make a return.

Will I receive a full refund when I return an item?

You will receive a full refund when you return an item in its original manufacturer’s packaging, undamaged and unmarked. If the item you are returning is priced at less than $35, you will be charged a 15% restocking fee. Please note you will not be refunded any shipping charges.

How many days do I have to make a return?

You have 30 days to make a return. During the holiday season, from November 1 to December 31, we extend the return window to 60 days. 

My item was damaged in transit. How do I place a return?

If your order has been noticeably damaged in transit, we strongly recommend that you refuse delivery and notify us immediately. Claims for missing items or items damaged in transit must be made within 48 hours of delivery. If there is carrier damage, please contact support@focuscamera.com with your order number and a description of the damage. 

There’s an issue with my order, what should I do?

Oh no! Please contact our customer service team so we can resolve the issue immediately. You can call us on 1.800.221.0828, email us at support@focuscamera.com, or send us a message here.

Can I exchange an item?

We do not currently offer exchanges. Please return the item you purchased within 30 days and order what you’d like instead.

If I ordered a kit, do I have to return all the items?

If you ordered a kit, you must return all components and accessories to receive a full refund.

I ordered a product that included a free item. I’d like to return it, do I need to return the free item as well?

If you ordered a product that included a free item, you must include the free item with your return. If not, your return will not be accepted and you will not receive a full refund.

Do you offer repairs?

We currently only offer camera repairs at our Brooklyn store. The item must be dropped off and collected in person as we do not accept shipped items for repair. For more information, please call our Brooklyn store on 1.718.431.7900.

What is your return policy?

Most items can be returned within 30 days for a full refund. Click here to read our full return policy.