The Synth9 from Electro-Harmonix is a pedal that transforms your guitar or bass signal into the sounds of nine different synthesizers. With different presets of '80s leads, enveloping pads, funky bass synths, and beyond, the Synth9 is the perfect pedal for guitarists who need to handle the synth parts in a cover, or those who just want to get a little weird with their sound design. In addition to volume controls to blend your dry guitar signal and the synth effect, this pedal also has two "CTRL" knobs that adjust two parameters for each individual synth mode. For similar pedals in this series, see the EHX C9 and B9 organ pedals, the Mel9 Mellotron-style pedal, and the Key9 electric piano pedal.

Product Specs

  • Synth9
  • Purple
  • 2010s

From the Price Guide

Reviews for the Electro-Harmonix Synth9 Synthesizer Machine
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  • Great and interesting pedal

    Verified Purchase

    This pedal makes some really cool sounds and can turn my set up into basically a synthesizer with all the other pedals I've got. I don't notice too big off a difference between the different modes honestly but that could be because I haven't tried it out individually enough yet. Still this pedal is …

  • Loved them all until this one...

    Verified Purchase

    I own the Key 9, the C 9, the Mel 9 and the Sitar emulator. I use these for soloing on Gigs I do for KKJZ radio, solo guitar twice a week. They all trigger great with my Nylon string guitar. I thought the string patch on this would allow me to track pads along with what I do with my looper but the…

  • Verified Purchase

    The best sound from this pedal is setting # 8 String Synth(attack time needs to lowered from 1 o'clock(EHX recommended setting) to 11 o'clock for a proper Van Halen-like synth sound). The other settings are not bad, but #8 String Synth stands out.

  • Great pedal!

    Verified Purchase

    I love this pedal it gives me an extra element to my live performances.. great price and seller too!

  • Verified Purchase

    E' un ottimo pedale con effetti davvero autentici. Sembra davvero di suonare uno strumento reale, nonostante io lo usi come pedale per flauto traverso. Veramente eccezionale!