Electro Harmonix PICO SHIMMER - Reverb

A Shimmer "made in EHX": the Oceans spirit, compressed into Pico format

The Pico Shimmer follows Electro-Harmonix's tradition of pedals that do more than just "add reverb"-they transform your signal into a soundscape. Here, the Shimmer approach is decidedly modern: generous reverb, a harmonic dimension through polyphonic octaves, then layers of modulation and delay to add movement, texture, and that famous "celestial" halo above the note.
Its personality comes from blending a familiar shimmer (ideal for thickening an arpeggio or launching a chorus) with more synthetic textures capable of flirting with pads, drones, and sound design. All packed into a mini format from the Pico series, perfect when every centimeter of the pedalboard counts.

Who is the Pico Shimmer for? From ambient to rock, studio to stage

The Pico Shimmer targets guitarists who want inspiring atmospheres without menus and without getting lost in submenus. It's also well suited for instrumentalists who like to process their sound (keyboards with mono output, synths, drum machines, bass pads, etc.), whenever a creative reverb is sought rather than a simple discreet "room" effect.
Style-wise, it excels in ambient, post-rock, shoegaze, cinematic, and worship, but it also integrates easily into pop or rock contexts: a touch of shimmer to widen a verse, infinite sustain to introduce a track, or a more unstable texture for an experimental break.
In the studio, it's an excellent "layering" pedal: record a clean take, then re-amp or overdub a second track with a richer setting to create depth. Live, its strength is spontaneity: lock in an atmosphere, hold it with the footswitch, then instantly return to a clearer sound. Placed at the end of the chain or in an effects loop, it sculpts space after drives and modulations.

Three "Scenes" and smart controls: simple to dial in, rich to explore

The Pico Shimmer offers 3 Scenes covering a surprisingly wide spectrum. "INTERGALACTIC" corresponds to the classic shimmer idea but in a very expansive version: polyphonic octaves, reverb, modulated delay, compression, and even a string synthesis engine for near-orchestral pads. "OFF-WORLD" is softer and more plush, with stronger delay modulation and colors reminiscent of vintage synth textures. "ETHERDUST" is the experimental side: delay time randomizes creating stutters, granular shimmering, and glitchy echoes that vary with your setting.
Main controls remain immediate: BLEND adjusts the wet/dry mix, TONE controls brightness (very useful to tame an overly bright shimmer or, conversely, make it stand out in a dense mix), TIME manages decay length up to infinity, and VOICE is the musical center of gravity, evolving the character between plate, shimmer, and ethereal string/synth textures.
The SCENE button switches modes and also accesses secondary functions to fine-tune your patch: reverb mix, delay time, modulation depth, and speed. For moments when you want to "freeze" the space, just hold the footswitch: the reverb becomes an instant pad, ideal for a solo bed, a transition, or a stretched-out finale.

Sound Character

The Pico Shimmer stands out with a sense of height and movement: the note doesn't just lengthen, it transforms and seems to float above the instrument. In "INTERGALACTIC," the high end sparkles, the image becomes wide and cinematic, and you can go from a subtle halo to a full pad simply by adjusting BLEND and VOICE. "OFF-WORLD" favors softness: attacks round off, open chords blend, and slow melodic lines gain an inspiring musical haze.
With "ETHERDUST," the pedal becomes more playful: stumbling fragments, unpredictable echoes, granular texture. It's the perfect mode to inject controlled chaos into a clean passage or create more abrasive soundtrack atmospheres. And if you keep the mix reasonable, the playing dynamics remain very pleasant: the guitar attack stays clear while the space builds behind you.
As of June 2026, the Pico Shimmer being a very recent model, there are still few "documented" pedalboards from artists featuring this exact reference. However, Electro-Harmonix's shimmer aesthetic is already well established among musicians from very different backgrounds, giving a good idea of the place this type of reverb holds in pro rigs, from alternative rock to more atmospheric textures.

Technical specifications

Effects	Reverb, Delay	Type	sector
Technology	Digital	Use	electric guitar
Format	Pedal	Color	Black
EQ	Tone

3 Scenes	INTERGALACTIC, OFF-WORLD, ETHERDUST	3 Buffered Bypass modes	Digital Bypass, Analog Bypass, Hybrid Bypass
INTERGALACTIC	polyphonic octaves, reverb, modulated delay, compression, string synthesis engine	Audio format	mono
OFF-WORLD	softer shimmer with enhanced delay modulation and vintage synth-style textures	Circuit	digital
ETHERDUST	glitch shimmer with randomized delay times (stutters and glitch echoes)	DC power input	center-negative
Infinite Reverb function	accessible by holding down the footswitch	Input impedance	2.2 Mohm
Delay time	0 to 950 ms	Output impedance	680 ohms
BLEND	wet/dry mix	Max input level	+1.5 dBu
TONE	overall brightness	Max output level	+2.1 dBu
TIME	decay time, up to infinite reverb	Dimensions	9.27 x 5.08 x 5.08 cm
VOICE	morphing of the character between plate, shimmer, and string/synth-style textures	Required power supply	9 V DC (center-negative)
SCENE button	selection of the 3 modes and access to secondary functions	Included adapter	9.6 V DC, 200 mA
Secondary functions	reverb mix, delay time, modulation depth, and modulation speed settings	Power consumption	100 mA