Dreadbox Lethargy Phaser

An OTA Analog Phaser Designed for Guitarists... and Synths

The Dreadbox LETHARGY follows the tradition of analog stage phasers, those that deliver that "liquid" sweep and an immediately musical sense of depth. Here, the Greek brand pushes the concept in a decidedly modern direction: a fully analog OTA-based circuit, an 8-stage phaser for more pronounced peaks and troughs, and above all a true "bridge" philosophy between the guitar world and the modular world.

Its name is no accident: beyond classic speeds, the LETHARGY can go very low for long, slow, hypnotic cycles. But it can also accelerate abruptly, entering very experimental behaviors where the phaser becomes a source of texture and timbre in its own right.

Who Is the LETHARGY For, and In Which Styles Does It Make a Difference?

The LETHARGY is aimed at musicians who love to sculpt movement : guitarists, bassists, modulation pedal enthusiasts, but also keyboardists and synth users (including semi-modular and modular via CV). Its analog character and wide adjustment range make it highly relevant both for a simple pedalboard and for a more ambitious studio setup.

In practice, it excels in psych rock, funk, shoegaze, post-rock, ambient, and electro genres: subtly, it thickens a clean tone with elegant movement; more pronounced, it brings that "jet," swirling quality that makes open chords sing; and at extremes, it becomes a texture machine, ideal for intros, bridges, or soundscapes.

On stage, its silent bypass and direct handling make it a pleasant pedal to operate. In the studio, the CV patch points open the door to automations and modulations impossible to achieve with a traditional phaser.

Controls, Modes, and CV Patch: Truly Sculptable Modulation

The strength of the Dreadbox LETHARGY is offering modulation that goes beyond just "Rate + Depth." You have a two-waveform LFO : triangle for smooth, classic sweeps, and square for more rhythmic, chopped, and percussive effects. The Rate control covers an impressive spectrum, from very slow up to 110 Hz, allowing exploration of very fast, almost metallic zones depending on the overall setting.

The Manual control sets the base phase shift position (perfect for "frozen" effects and filter/"cocked" type colors), while the LFO/Manual balance lets you blend automatic modulation with manual positioning. You can thus stay within a "traditional" phaser or, conversely, anchor the texture on a precise position while injecting just the right amount of movement.

Finally, the Feedback knob shifts the pedal from a silky phaser to a more aggressive machine: low settings add softness and can approach a subtle analog vibrato ; higher settings accentuate character, densify resonances, and can push toward more extreme, biting phase shifts with deliberate feedback saturation.

Regarding synth integration, its 3 patch points transform the LETHARGY into a true modulation tool: CV input on Manual (initial phase shift control) and Rate (speed), plus an LFO output to send modulation to other devices. The CV signals operate at +/- 5 V, a common format for interfacing with many modular environments.

Sound Character

The LETHARGY delivers a dense, "chewy," and very lively phasing effect, with that organic movement sensation typical of analog circuits. At gentle settings, it remains musical and enveloping: ideal for widening an arpeggio, adding depth to a clean guitar chorus, or adding air to a synth pad. Increasing feedback and adjusting the LFO/Manual balance gives the phaser more definition and can make it more expressive, almost vocal.

The triangle waveform favors smooth transitions and large soundscapes, while the square waveform provides sharper cuts, very effective for rhythmic patterns and modulated "gate" effects. Thanks to its very high maximum speed, the LETHARGY can also move away from the "vintage" phaser sound to enter fast, vibrant, sometimes almost metallic textures: a true playground for experimental music and sound design.

Technical specifications

Effects	Chorus / Flanger / Phaser, Phaser	Type	sector
Technology	Analog	Use	electric guitar
Format	Pedal	Color	Purple

Very wide LFO range	from approximately 15 seconds to 110 Hz	LFO OUT	outputs the LFO at +/- 5 V
2 LFO waveforms	triangle (classic Phaser) and square wave (rhythmic and choppy effects)	Bypass	silent CMOS Buffered Bypass
Balance between the LFO and the Manual control	adjustable, modulating the phase shift	Power adapter	9 V DC (optional)
Feedback control	from a gentle vibrato-like effect to extreme phasing driven by feedback	Included accessories	documentation, box
Patch points	3, compatible with modular and CV equipment	Power supply	not included
MANUAL	accepts CV to control the degree of initial phase shift at +/- 5 V	Required voltage	9 V DC
RATE	accepts CV to control the phase-shifting speed at +/- 5 V	Power consumption	90 mA