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Electro-Harmonix Bass Micro Synth XO

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$249.00 to $324.80 Price Tier: High-end

4.5 (39)

2 Reviews

Find out who is using Electro-Harmonix Bass Micro Synth XO

5 community setups

58 wishlisted

128 saved

Page last updated Jul 03, 2026

Pricing and availability

We compare 600+ stores and found this item at 10 stores. Prices updated July 3, 2026.

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4.0 (13)

$324.80

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4.0 (5)

$324.80

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4.6 (41)

$324.80

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5.0 (30)

$252.09 40 available New

$216.16 13 available Used

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4.0 (11)

$324.80

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$324.80

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4.0 (1)

$324.80

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4.4 (80)

$252.00 $249.00 $3.00 · All time low

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£256.00

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$324.80

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Average Price: $299

High-end/Boutique

$70

$201+

Price Tier

In the Bass Effects Pedals category, Electro-Harmonix Bass Micro Synth XO is priced in the High-end/Boutique range. This premium gear is built to very high standards and offers premium features.

Budget

Standard

High-end

Price History

Based on price data from 7 merchants for "Electro-Harmonix Bass Micro Synth XO". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

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Experience the magic of vintage analog synth sounds with the Electro-Harmonix Bass Micro Synth XO. This pedal is your gateway to uncovering a treasure trove of bass tones, ranging from the iconic sounds of early Moog synthesizers to your very own custom creations. Its 10 slider controls allow for extensive customization and perfect control of your sound, ensuring your music is as unique as you are.

The Bass Micro Synth XO boasts four independent and fully mixable voices - Bass, Octave, Sub-Octave, and Square Wave. This empowers you to shape and mold your bass sounds to fit any music piece or mood. The envelope control feature lets you modify these signals, offering a variety of "bowed" or "blown" sounds.

Whether you're a beginner looking to explore new sonic territories or a seasoned professional seeking to add more depth to your music, the Electro-Harmonix Bass Micro Synth XO is designed to take your bass sound further than ever before.

Key Features:

10 slider controls for a wide array of analog synth sounds
Four independent and fully mixable voices (Bass, Octave, Sub-Octave, and Square Wave)
Envelope control for a variety of "bowed" or "blown" sounds
Power Adapter Included

Owner's manual

Electro-Harmonix Bass Micro Synth XO User Manual

Product specs

Pedal Type	Bass Guitar Synthesizer
Analog/Digital	Analog
Effects	3-pole Resonant Filter, 4-voice Mixer: Sub Octave, Octave Up, Square Wave
Inputs	1 x 1/4"
Outputs	1 x 1/4"
True Bypass	Yes
Power Source	9V DC power supply (included)
Height	2.5"
Width	4.75"
Depth	5.75"
Weight	2 lbs.

FAQs

What type of power supply does the Electro-Harmonix Bass Micro Synth XO require?: The Electro-Harmonix Bass Micro Synth XO requires a 9V DC power supply, which is included with the pedal. It has a center-negative polarity.
Can the Electro-Harmonix Bass Micro Synth XO be used with a guitar?: While designed specifically for bass, the Electro-Harmonix Bass Micro Synth XO can be used with a guitar, though it may affect the tonal response and tracking due to the difference in frequency ranges.
Does the Electro-Harmonix Bass Micro Synth XO have true bypass?: Yes, the Electro-Harmonix Bass Micro Synth XO features true bypass, ensuring that your signal remains unaltered when the pedal is not engaged.
What effects does the Electro-Harmonix Bass Micro Synth XO offer?: The Electro-Harmonix Bass Micro Synth XO offers a 3-pole resonant filter and a 4-voice mixer with Sub Octave, Octave Up, and Square Wave effects, allowing for a wide range of synth-like sounds for bass.
Is the Electro-Harmonix Bass Micro Synth XO suitable for live performances?: Yes, the Electro-Harmonix Bass Micro Synth XO is suitable for live performances, offering robust construction and a range of effects that can enhance bass lines in a live setting.
What are the dimensions of the Electro-Harmonix Bass Micro Synth XO?: The Electro-Harmonix Bass Micro Synth XO measures 2.5 inches in height, 4.75 inches in width, and 5.75 inches in depth, making it compact for a pedalboard setup.

Videos

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The Bass Channel

Electro-Harmonix Bass Micro Synth Demo

The Bass Channel

Bass Micro Synth - Electro-Harmonix | Review | Guitarspot.Gr

GuitarSpotGr

Electro-Harmonix - Bass Micro Synth

Bass Stuff

EHX Bass Micro Synth Sample Settings Demo

FreeBassTranscriptions

EHX Bass Micro Synth Overview/Demo

FreeBassTranscriptions

Electro Harmonix Bass Microsynth | Review

Guitar Interactive Magazine

MY FAVORITE EHX BASS MICRO SYNTH SETTING!

Bray Rowley

Reviews

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PROS

Wide range of sounds, from vintage synth to aggressive tones
Intuitive sliders facilitate easy sound adjustments
True analog signal path offers authentic synth textures
Excellent tracking accuracy on sub octaves
Can significantly enhance live and studio performances
Offers unique sounds not replicated by other pedals
Compatible with both active and passive basses
Sturdy build quality ensuring longevity
Comes with a manual featuring preset suggestions
Blendable with other effects for creative soundscapes

CONS

Monophonic, struggles with chords and double-stops
Some users report poor tracking on octave up/down
Square wave tone described as unpleasant by some
Requires a separate power supply, complicating setup
Learning curve due to complex controls
Internal input gain trim inconvenient to adjust
Can produce glitches when tracking two different notes
Some find the high octave sound thin and limited
Manual adjustments during performance can be challenging

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Electro-Harmonix Bass Micro Synth XO.

Features and functionality

0 0

The octave up feature is always distorted due to its analog nature, providing a unique but potentially limiting sound.
Source
0 0

The Micro Synth uses the guitar's pitch to control an internal signal generator, creating synth sounds independent of the guitar's direct output.
Source

Mods and upgrades

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Users suggest modding the pedal for expression control to enable real-time filter adjustments, though it significantly increases the cost.
Source

Use cases and applications

0 0

Ideal for EDM and dance pop sounds, especially when paired with a Source Audio Hot Hand for enhanced control.
Source
0 0

It’s suggested to avoid using a wah pedal simultaneously with the Micro Synth to prevent tracking issues and maintain desired sound quality.
Source
0 0

A clean boost before the Micro Synth can aid in achieving a more consistent lead tone, especially when alternating between lead and rhythm in a band setting.
Source

User experience

0 0

Analog setup requires dialing in tones manually, which can be challenging if unfamiliar with 80s-style synths.
Source

Comparisons

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Tracks more reliably and offers more usable sounds than the Boss SYB-5 according to users who have used both.
Source

Setup and maintenance

0 0

Owners recommend placing the Micro Synth at the front of the signal chain for optimal tracking, as effects before it can disrupt signal processing.
Source
0 0

Using a compressor before the Micro Synth can limit its envelope response, as it would only follow a single envelope pattern.
Source

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4.5 out of 5

Based on 2 Reviews and 39 Ratings

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1 star

nikolaikristensen

108

over 11 years ago

Gotta love the analogue

Beautiful pedal, with endless possibilities. I have spent hours just playing around with it, and I keep finding new sounds and nuances. It is 100% analogue, and just easy to get to know. With the pedal comes a book with "presets", settings for specific sounds. There are also some blank templates where you can draw in your own preferences.