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Electro-Harmonix Bass Mono Synth Bass Synthesizer Pedal

Electro-Harmonix Bass Mono Synth Bass Synthesizer Pedal, 11 Distinct Mono Synth Sounds, Dry and Synth Knobs for Individual Volume Signal Adjustment, Compatible with Expression Pedals


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MSRP: Old Price $164.70 Discounted Price $123.50 Save : $41.20 (25%)
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MSRP: Old Price $164.70 Discounted Price $123.50 Save : $41.20 (25%)
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If you're looking to transform your Bass into a synth, look no further than this Electro-Harmonix innovation. Featuring 11 distinct mono synth sounds, straight-forward controls for sound shaping, and radical vintage aesthetics, this synth is great for Bass players that want to diversify their tones with some trippy soundscapes.

11 Distinct Mono Synth Sounds
It's always a fun concept to make one instrument sound like another. With the Mono Synth Bass Synthesizer pedal, Electro-Harmonix takes this to a whole new level. This pedal features 11 different synth sounds including Acid, X-Fade, Laser, and Oblivion. Each has a specific and interesting synth character that you can use in different musical contexts and situations. You can also create, save, and recall up to 11 presets, one for each of the individual synth sounds.

Straight-Forward Controls for Sound Shaping
The controls on this pedal make it easy to get a cool synth sound to your liking. Each of the 11 sounds have their own dedicated knob selection so you can choose what you want. There's a Dry knob and Synth knob to adjust the volume output for both of those signals at the synth output. Adjusting the two in conjunction creates different sound qualities. The SENS (sensitivity) knob adjusts how your playing dynamics trigger the pedal. The CTRL (control) knob adjusts keys parameters for each synth type to advance the nuance of your sound. There's also an EXP input so you can adjust a separate and distinct parameter with the addition of an expression pedal.

Radical Vintage Aesthetics
Like all EHX pedals, this one has a cool, on-point aesthetic. It's got a grey base, with a light neon blue striped over it, making use of open-letter text filled with backing colors for a real '80s vibe. "electro-harmonix New York City, USA" is printed along the bottom, letting everyone know its quality build. Throw in the white knobs and additional white text for a look that fits perfectly with its sound.


  • Mono Synth Bass Synthesizer Pedal
  • 11 Distinct Mono Synth Sounds with One User Programmable Preset for Each
  • Dry and Synth Knobs for Individual Volume Signal Adjust
  • SENS and CTRL Knobs
  • Expression Pedal Compatible
  • Awesome '80s Aesthetic
  • Includes EHX 9.6VDC-200mA Power Supply

Get your Electro-Harmonix Bass Mono Synth Bass Synthesizer Pedal today at the guaranteed lowest price from Sam Ash with our 45-day return and 60-day price protection policy.

Things You Will Get:

  • Bass Guitar Effects Pedal

Kinda easy to use


It's sound is awesome but only thing is it doesn't lock in sound it skips every now and then. But still nice.



yes great


great sounds great pedal



Rather Disappointing


I purchased this reluctantly as a toy to mess around with, but found it practically unusable. it doesn't track well at all, and you have to play single notes obscenely slow. For example "N.I.B" by Black Sabbath is about as fast as you can get (not including the descending fills). All in all I regret this purchase, and I seem to find it hard to enjoy EHX pedals as a Bass player.




I would recommend this pedal to my friends!


It's an easy to use bass synthesizer; can't go wrong!



Exactly what I need to get that Synth style sound.


I love that I could make the adjustments that I wanted for each sound and then same them as a prerset for each Synth definition. SO no fiddling with the knobs after my pedal board has been in the case. The presets are right where i left them regardless of the knob position. PERFECT!!



Bass Mono Synth Bass Synthesizer Pedal

4.0 5


Effect Type Synthesizer
Inputs 1 x Exp, 1 x Instrument Input
Outputs 1 x Dry, 1 x Synth
Control Layout Dry Knob, Synth Knob, Sens Knon, Ctrl Knob, Type Knob, Preset Footswitch, Bypass Footswitch
Battery Power No
Power Supply Type EHX 9.6VDC-200mA Power Supply
Power Supply Included Yes
Dimensions 4.0 x 2.25 x 4.75 inches (WxHxD)
Warranty Info:

The manufacturer's warranty covers parts for one year and labor for one year from date of purchase. The warranty excludes damage from misuse, abuse, and contains other exclusions.

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