SYNTH9 Synthesizer Machine

The polyphonic SYNTH9 Synthesizer Machine transforms your guitar or bass with 9 presets that were precisely tuned to emulate the most sought after, vintage synthesizer sounds ever! From searing lead synths to spacey synth pads and deep, funky, synth bass grooves, it’s all accessible.

The SYNTH9 is also super easy to use with DRY volume, SYNTH volume, CTRL1 and CTRL2 knobs that provide precise control over each preset’s parameters.

If you dig the kind of classic synth sounds made famous on recordings by groups like ELP, EVH, Kraftwerk, Joy Division, P-Funk, Peter Gabriel and more, we think you’ll love the SYNTH9.

TIPS ON GETTING OPTIMUM PERFORMANCE FROM THE SYNTH9
1. The SYNTH9 is generally best used as the first pedal in an effects chain. Place modulation, delay, and reverb effects after the SYNTH9. The unit will not perform well if placed in the effects loop of a guitar amp.

2. For optimal playability, set the guitar’s pickup selector to the bridge pickup and turn the volume knob all the way up (“10”).

3. Avoid placing a distortion or overdrive in front of the SYNTH9, which could muddy up the input signal and cause the tracking to be unstable. If you want to add overdrive or distortion, place it after the SYNTH9.

4. The SYNTH9 has a built in compressor that is active on the synth sounds at all times. We recommend you do not insert another compressor into your signal chain while the SYNTH9 is in effect mode.

CLICK HERE to download a SYNTH9 suggested factory settings and User settings sheet.


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Quick Specs
- Transforms the tone of your guitar or bass into that of a vintage synthesizer
- 9 presets that were created to emulate many of the most popular synthesizer sounds ever
- Works on guitar or bass without modifications, special pickups or MIDI implementation
- The SYNTH9’s usable tracking range extends up to about the 23rd fret on the high-E string of a standard guitar and down to the open A-string on a bass guitar
- Use the SYNTH9 with a B9 or C9 Organ Machine as well as the KEY9 Electric Piano Machine and MEL9 Tape Replay Machine to create your own mega-keyboard setup
- EHX 9.6DC-200 PSU included
- Dimensions in inches: 4.0 (w) x 4.75 (l) x 2.25 (h)
- Dimensions in mm: 102 (w) x 121 (l) x 89 (h)
From the Blog
Posted 11/16/2017


Ron Minis uses his EHX SYNTH9 and MEL9 together to craft this theme song tribute to Rick and Morty.



From the Blog
Posted 11/9/2017


“Players who’ve been using guit-synth technology for years will marvel at the SYNTH9’s ease of use and powerful tones. Newer players will be happy they’re living in the 21st century!” –Vintage Guitar Magazine

Click here to read the full review.



From the Blog
Posted 8/21/2017


JJ Tanis puts the EHX SYNTH9 Synthesizer Machine through its paces and demonstrates each of its 9 analog synthesizer presets.



From the Blog
Posted 2/20/2017

The polyphonic SYNTH9 Synthesizer Machine transforms your guitar or bass with 9 presets that were precisely tuned to emulate the most sought after, vintage synthesizer sounds ever! From searing lead synths to spacey synth pads and deep, funky, synth bass grooves, it’s all accessible.

EHX Founder, Mike Matthews, says: “The new SYNTH9 Synthesizer Machine may be the greatest of all the 9 Family pedals… If you dig the sound of classic synthesizers, you’ll JUMP and shout, I’m a LUCKY MAN, when you plug into the SYNTH9!”

The SYNTH9 features nine of the most distinctive vintage synth type sounds: OBX, PROFIT V, VIBE SYNTH, MINI MOOD, EHX MINI, SOLO SYNTH, MOOD BASS, STRING SYNTH and POLY VI.

Click here to learn more about the SYNTH9.

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Show your colors with genuine EHX tee shirts and authentic Electro-Harmonix accessories!
Get this limited-edition Day-Glo poster of the original 1968 art that inspired the Electro-Harmonix logo!

Mike Matthews stated: “The image on our Flashback Poster is of the original artwork that inspired the famous Electro-Harmonix logo. I think players who dig our pedals will also enjoy the chance to own a piece of EHX memorabilia.”
Did you know that Electro-Harmonix makes many of the world's greatest vacuum tubes? The next time you need to re-tube your guitar, bass, or hi-fi amp, be sure to insist on getting authentic Electro-Harmonix tubes.
Our new EH Strings allow you to capture every nuance of your playing style with lightning fast playability. Made of a pure nickel wrap with a specially-selected stainless steel, these sweet-sounding round wounds are truly like no other strings you've played. Not only do they last longer and stay in tune longer, but we think they're the best sounding strings ever made. Available in 9s, 10s and 11s.
Dig it, now you can rock EHX in our new heavy-duty black hoodie! It’s emblazoned with the iconic Electro-Harmonix Flashback logo in white on the left chest and back.