4ms Phaseur Moire (Unknown)
A phaser pedal with three interlocking LFOs that spirals, lurches and warps time.
Overview
The 4ms Phaseur Moire is sold as a phaser pedal, but it leans hard into vibe and ring modulation territory. It has three LFOs. The main LFO drives the core sweep. Auxiliary A adds depth and motion. Auxiliary B modulates the modulator, controlling the speed of the center LFO as it sweeps in and out. The result is an elastic, living pulse.
Owners report a wide range of textures, from lush, chorus-like sweeps that mimic the gentle ebb of shoreline waves to seasick pitch vibrato that warps a guitar into something unrecognizable. It can do subtle movement, but it lives in the extremes - drippy, slippy and gloriously messed up. The blend control sets how far down the rabbit hole you go. The ring knob puts out a signal so loud that builders have called it "insanely loud."
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
The Phaseur Moire is built around a modulation matrix that feels more synth than stompbox. The main LFO sets the foundational sweep. Auxiliary B modulates the speed of the main LFO, and that is what makes it uncanny. It is organic and unpredictable. One user put it this way: "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…" It doesn't repeat. It evolves.
Waveform Flexibility and Sonic Range
There are different waveforms on tap, plus controls called Height, Depth and Wave. They let you shape the sweep from sine-soft to jagged and stuttering. You can blend between a "lush chorus-y sweep" and a "seasick, pitch vibrato." The speed control is described as covering a range "from the rhythm of sea shore waves to a swel" - the description cuts off there.
CV Integration for Modular Minds
Two CV inputs make the Moire a natural bridge between guitar and modular synth. It is a module you program, nudge and coax as much as a pedal you stomp on. 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 interacts with your signal chain even when off. For DIY builders, the suggested enclosure is a 1590BB, a standard large pedalbox, and an mc33172 op-amp is strongly recommended for the best sound. Most pots are believed to be B100K, but the blend control is a B10K. That matters if you're modding or repairing.
Collectibility & Value
There is 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 how many build guides and mod discussions exist. Owners and forum users describe it as "awesome sounding" and capable of "some very interesting results." Concrete feedback on reliability or common failures is absent, with one exception.
A builder reported a "strange siren sound oscillating with or without any audio source going through the pedal," which suggests instability or grounding issues in some builds. Whether this is a design quirk, a build error or specific to DIY versions is unclear. Another builder noted that "the ring is insanely loud," which could mean the ring modulation output is hot. That is risky for downstream gear.
With no official specs and no market data, collecting the Phaseur Moire is a matter of curiosity more than investment. Anyone hunting one should expect to dig through forums, Reverb listings and DIY communities. If you're building it, double-check the blend pot.
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