4ms Phaseur Moire (Unknown)
A phaser pedal that doesn’t just swirl—it spirals, lurches, and warps time with three interlocking LFOs and a voice all its own.
Overview
The 4ms Phaseur Moire isn’t your dad’s phaser. It doesn’t sit politely in the mix—it grabs the signal by the throat and drags it through a funhouse mirror of modulation. Marketed as a phaser pedal, it flirts heavily with vibe and ring modulation territory, earning its place in the boutique weirdness hall of fame. With three LFOs in play, it’s less of an effect and more of a modulation ecosystem. The main LFO drives the core sweep, while auxiliary A adds depth and motion, and auxiliary B? That one doesn’t just modulate the sound—it modulates the modulator, controlling the speed of the center LFO as it sweeps in and out. The result is an elastic, living pulse that feels less like a pedal and more like a collaborator.
Owners report a staggering range of textures, from lush, chorus-like sweeps that mimic the gentle ebb of shoreline waves to seasick pitch vibrato that warps your guitar into something unrecognizable. It’s capable of subtle movement, sure, but its soul lives in the extremes—drippy, slippy, and gloriously fucked up. The blend control lets you dial in just how far down the rabbit hole you want to go, while the ring knob unleashes a signal so loud it’s been called “insanely loud” by builders. Whether that’s a feature or a flaw depends on your appetite for chaos.
And yes, it looks as wild as it sounds. The artwork—whatever iteration you encounter—is consistently praised as awesome, a visual cue that you’re not dealing with another stompbox clone. This is gear for the tinkerers, the patch-cable poets, the ones who want their effects to surprise them.
Specifications
| Manufacturer | 4ms |
| Product Type | Guitar effect pedal, phaser |
| Modulation | Has 3 LFOs for modulation: a main one, auxiliary A, and auxiliary B that modifies the center LFO speed. |
| Controls | Main LFO speed, Height, Depth, Wave, Blend, Ring, Aux A Speed, Aux A Depth, Aux B Speed, and Aux B Depth. |
| CV Inputs | 2 CV inputs |
| Potentiometers | There are 5 pots on this pedal, which this page suggests are all B100K. |
| Potentiometer (Blend control) | The blend control, however, requires a B10K pot according to LMS. |
| Enclosure size (for build) | I would use a 1590BB for it. |
Key Features
Triple-LFO Modulation Engine
At the heart of the Phaseur Moire is a modulation matrix that feels more synth than stompbox. The main LFO sets the foundational sweep, but it’s auxiliary B—the one that modulates the speed of the main LFO—that turns this into something uncanny. It’s not just rhythmic; it’s organic, unpredictable. One user described it perfectly: “The best part is that the third LFO controls the rate of the second LFO as it sweeps in and out, it’s fantastic, elastic…” That’s the magic. It doesn’t repeat—it evolves.
Waveform Flexibility and Sonic Range
With different waveforms on tap and controls like Height, Depth, and Wave, the Moire lets you sculpt the character of the sweep from sine-soft to jagged and stuttering. The ability to blend between a “lush chorus-y sweep” and a “seasick, pitch vibrato” means it can play nice or go full avant-garde. The speed control alone promises a range “from the rhythm of sea shore waves to a swel”—though the description cuts off, the implication is clear: this isn’t just fast or slow, it’s tidal.
CV Integration for Modular Minds
The inclusion of two CV inputs makes the Moire a natural bridge between guitar and modular synth worlds. It’s not just a pedal you stomp on—it’s a module you program, nudge, and coax. For synth-minded players, that opens up sequencing, feedback loops, and dynamic control that most guitar effects can’t touch.
Build and Circuit Notes
The circuit is buffered, not true bypass—so it’ll interact with your signal chain even when off. That’s not inherently bad, but it’s worth knowing if you’re chasing pristine transparency. For DIY builders, the enclosure suggestion is a 1590BB, a standard large pedalbox, and there’s a strong recommendation to use an mc33172 op-amp for optimal sound. As for pots, most are believed to be B100K, but the blend control is a B10K—small detail, big difference if you’re modding or repairing.
Collectibility & Value
There’s no confirmed production timeline, original pricing, or current market data for the 4ms Phaseur Moire. It appears to be a niche, possibly limited-run or build-it-yourself design, given the prevalence of build guides and mod discussions. Owners and forum users consistently describe it as “awesome sounding” and capable of “some very interesting results,” but concrete feedback on reliability or common failures is absent—except for one notable caveat.
A builder reported a “strange siren sound oscillating with or without any audio source going through the pedal,” suggesting potential instability or grounding issues in some builds. Whether this is a design quirk, a build error, or specific to DIY versions is unclear. Another noted that “the ring is insanely loud,” which could mean the ring modulation output is hot—great for expression, risky for downstream gear.
Given the lack of official specs and market data, collecting the Phaseur Moire is less about investment and more about curiosity. It’s a grail for those who want to explore the outer edges of phasing, but it’s not a plug-and-play classic. If you’re hunting one, expect to dig into forums, Reverb listings, and DIY communities. And if you’re building it? Double-check that blend pot.
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