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Electro Harmonix Mono Synth Pedal

'80s inspired bass and lead synth tones

Written by

Cian Hodge

Turn your guitar into a synth with the Electro Harmonix Mono Synth - a pedal packed with crazy sounds, from vintage semi modular tones to fat voicings and soaring leads.

The American company have been making legendary pedals since their inception in 1960 and the Mono Synth is yet another awesome stompbox added to the line-up. Boasting the likes of the Memory Man delay, Synth9, Pog and Superego, they're not short on synth emulators. These guys know what a great synth sounds like.

Can you make your guitar sound like a synth? And will one of them go on The Captains board?


Add colour and flavour to your guitar sound with the 11 presets packed into the Mono Synth. Despite just the two tone dials in the form of Control and Sensitivity, there's a whole lot lot explore. Sounds range from a classic '80s vibe Bass and Nu Wave to the sci-fi Blast and Twin settings. Get classic square waves from Tinker or spooky swells from Ghost. 

All settings work great with other Electro Harmonix pedals in the range, especially the Canyon and Holy Grail reverb or Big Muff for a bit of crunch. The Mono Synth is monophonic, so play one note at a time for awesome old-school leads.


It's really easy to set the 11 separate presets for each sound type. Simply hold down the preset footswitch and it's locked in. You can jump from one tone to another with a simple step on the Mono Synth.  Hook the stompbox up to an expression pedal for real-time effect. Place at the start of your pedal chain for best results rather than in the effects loop.


  • 11 Synth sounds
  • Works without MIDI
  • Controls: Sensitivity, Volume, Control
  • Expression Pedal Input
  • 11 Preset Save Slots
  • Synth & Dry outputs
  • 9V PSU
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