Pricing and availability

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Average Price: $227

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$150

$601+

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Price History

Based on price data from 1 merchant for "Subdecay M3". Prices shown reflect NEW condition. Tracking began Apr 7, 2026.

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Description

Dive into a new dimension of sound with the Subdecay M3 guitar synth pedal. This pedal is more than just an effects box; it's a portal to a universe of sonic possibilities. Designed for the adventurous guitarist, the M3 features three dynamic oscillators that allow you to sculpt mesmerizing soundscapes. With 11 oscillator presets and 11 algorithm resets, this pedal offers an extensive range of tonal options, empowering you to control filters, amplifiers, LFOs, and more.

The heart of the M3 lies in its fully analog filter with resonance control, delivering warm, organic tones that digital can't replicate. Intuitive controls for volume, resonance, parameters, oscillators, and algorithms give you the freedom to fine-tune your sound to perfection. With an LED indicator for effect status and a foot-switch for bypass, the M3 ensures seamless integration into your setup.

Built for the stage and studio alike, the M3 connects effortlessly with standard 6.3 mm jacks and operates on a 9-18 V DC power adapter. Proudly made in the USA, this pedal doesn't support battery power, emphasizing its commitment to robust performance.

Key Features:

  • Monophonic synthesizer with 3 oscillators
  • 11 Oscillator presets & 11 algorithm resets
  • Fully analog filter with resonance control
  • Controls: Volume, resonance, parameters, oscillators, algorithm
  • LED effect on indicator and foot-switch bypass
  • 6.3 mm Jack input and output
  • Power adapter connection: 9-18 V DC (not included)
  • Made in the USA

Product specs

Available since December 2019
Effect Types Synthesizer

FAQs

What type of power supply does the Subdecay M3 Mono Guitar Synthesizer require?

The Subdecay M3 requires a standard 9V DC power supply with a negative center pin, commonly used for many guitar pedals.

Can the Subdecay M3 Mono Guitar Synthesizer be used with a bass guitar?

Yes, the Subdecay M3 can be used with a bass guitar, but the tracking and synth sounds are optimized for standard guitar frequencies.

Does the Subdecay M3 offer polyphonic synthesis?

No, the Subdecay M3 is a monophonic synthesizer, meaning it can only process one note at a time.

How does the Subdecay M3 differ from traditional guitar effects pedals?

Unlike traditional effects pedals that modify the guitar's signal, the Subdecay M3 generates synth tones by converting the guitar's input into synthesized sounds.

Is the Subdecay M3 suitable for live performance?

Yes, the Subdecay M3 is designed for live performance, offering intuitive controls and robust sound options for real-time use on stage.

R.J. Ronquillo

R.J. Ronquillo

Subdecay M3 Guitar Synth pedal - demo by RJ Ronquillo

Video thumbnail for Subdecay M3 Guitar Synth pedal - demo by RJ Ronquillo by R.J. Ronquillo

Subdecay M3 Guitar Synth pedal - demo by RJ Ronquillo

R.J. Ronquillo

R.J. Ronquillo

Video thumbnail for Demos in the Dark - Subdecay: M3 Monophonic 3 Oscillator Synth by MAS Distro

Demos in the Dark - Subdecay: M3 Monophonic 3 Oscillator Synth

MAS Distro

MAS Distro

Video thumbnail for Mas Distro - Subdecay: M3 Monophonic 3 Oscillator Synth - Bass Demo by MAS Distro

Mas Distro - Subdecay: M3 Monophonic 3 Oscillator Synth - Bass Demo

MAS Distro

MAS Distro

Video thumbnail for Writing a Song With the SubDecay- M3 Guitar Synthesizer by SpiralCasterPlaysPedals

Writing a Song With the SubDecay- M3 Guitar Synthesizer

SpiralCasterPlaysPedals

SpiralCasterPlaysPedals

Video thumbnail for 3 minutes with the Subdecay M3 | Secret Weapons by Mark Johnston

3 minutes with the Subdecay M3 | Secret Weapons

Mark Johnston

Mark Johnston

Video thumbnail for Subdecay - M3 by collector//emitter

Subdecay - M3

collector//emitter

collector//emitter

Video thumbnail for Subdecay M3 Monophonic 3 Oscillator Guitar Synth by Dennis Kayzer

Subdecay M3 Monophonic 3 Oscillator Guitar Synth

Dennis Kayzer

Dennis Kayzer

Video thumbnail for Subdecay: M3 Monophonic Guitar Synth Pedal - Video Demo by Harsh Tones, Inc.

Subdecay: M3 Monophonic Guitar Synth Pedal - Video Demo

Harsh Tones, Inc.

Harsh Tones, Inc.

Reviews

PROS

  • Produces powerful, wide analog synthesizer sounds

  • Capable of bass, leads, and experimental tones with few controls

  • Features a unique analog filter with self-oscillation

  • Precise tracking, even with bendings

  • Can produce experimental-charming "glitches"

  • Enables recreation of old school analog sounds (Kraftwerk, Terminator, John Carpenter)

  • Solid build quality with sturdy knob selection

  • Highly compact design

CONS

  • Requires adjustment in playing style, which needs practice

  • Lacks an expression input for external control

  • No presets, limiting on-the-fly sound changes

  • Not easy to switch sounds during live performance

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Subdecay M3.

Features and functionality

  • The M3 excels in filtering synthesis, offering a latency-free experience and avoiding digital artifacts common in other brands.

    Source

Comparisons

  • Unlike Boss SY1 and Roland GR, the M3 provides immediate control over the sound, enhancing the feeling of interaction with the guitar signal.

    Source

Use cases and applications

  • The Subdecay M3 is recommended for achieving filtering synthesis without needing special pickups or software.

    Source

User experience

  • Owners highlight that the M3 feels responsive to playing dynamics, providing a natural interaction compared to software-triggered effects.

    Source

Other

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Artist usage

Add artist
See how Karl Hyde uses Subdecay M3

Karl Hyde

Singer, Guitarist

Freur

...
Verified via Photo

In this post from Underworld's Instagram account, Karl is holding his then recently-acquired M3 guitar synth.

Genre Usage

Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.

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