The Hungry Robot Wallflower is a pedal that combines five effects in one large enclosure, aimed at players who build shoegaze-style walls of sound. Hungry Robot describes it as a "wall-of-noise" device, and states that "The Wallflower aims to create a distorted, ethereal ambience, blending beauty and noise."1
The Wallflower was made as a very limited run. Guitar Pedal X reported in October 2025 that it was seemingly all sold out shortly after release.41 Its arrival was also delayed: Stefan Karlsson of Guitar Pedal X reported that several production hitches pushed the pedal back by approximately half a year.3
The five effects
Hungry Robot lists five unique effects inside the Wallflower:1
| Effect | What it is |
|---|---|
| BLOOM | A dreamy long decay pad reverb1 |
| LAYER | A cavernous octave up and down reverb1 |
| CHORALE | A lush two mode chorus1 |
| HOLLOW | A moody low pass filter1 |
| GROWTH | A massive end of chain distortion1 |
Guitar Pedal X sums up the combination as "chorus, detune, octave-up/down reverb, long-delay pad reverb, distortion and a Hollow low-pass filter" in one pedal.3 For a player, that covers much of the ground of a shoegaze board in a single box: the two reverbs and chorus sit alongside a filter and a distortion placed at the end of the chain. Players who want to go deeper on any one of those blocks, such as the dual-channel reverb approach of the Hungry Robot Stargazer or the modulated reverb of the Hungry Robot Borderland, will find them as dedicated pedals; the Wallflower's pitch is having all five colors together. It is a multi-effect in the broad sense, though built around one sound family rather than a modeler, and sits apart from mainstream multi-effects pedals and single-purpose reverb pedals.
Controls and footswitches
The Wallflower has five controls and two footswitches.3 The left footswitch is the Engage/Bypass switch for the pedal as a whole, and the right footswitch switches the Distortion on its own, so the Growth section can be brought in and out without touching the rest of the effects.3
| Control | Function |
|---|---|
| Bloom | Long Delay Pad Reverb3 |
| Layer | Octave Up + Down Reverb3 |
| Chorale switch | DOWN for mixed Chorus and Detune (more subtle) / UP for Classic Chorus3 |
| Hollow | Low Pass Filter3 |
| Distortion Master | Distortion master level3 |
The Chorale switch is the only mode selector named in the coverage: down gives the subtler mixed chorus-and-detune mode, up gives classic chorus.3
What reviewers said
Guitar Pedal X's Stefan Karlsson got the pedal after the delayed release and described its core character3:
"With controls centred and Chorale up, it delivers a dark, hazy wall-of-sound"
He also noted the pedal's size: the Wallflower and Hungry Robot's Screen Violence are both large enclosure pedals, with the Screen Violence a little larger than the Wallflower.3
Availability and price
Hungry Robot listed the Wallflower at $150 USD plus shipping on its product pages.12 In Europe, Guitar Pedal X reported the limited-release pedal available from Effekt Boutique for €229 / £200.3 Guitar Pedal X reported the very limited run largely sold out as early as October 2025.4 For players who miss it, Guitar Pedal X notes that archival details and a manual can still be accessed on the Hungry Robot website.3
Videos
Pedalgaze
Questions
What are the five effects in the Hungry Robot Wallflower?
The Wallflower combines five effects in one pedal: Bloom, a dreamy long decay pad reverb; Layer, a cavernous octave up and down reverb; Chorale, a lush two-mode chorus; Hollow, a moody low pass filter; and Growth, a massive end-of-chain distortion. Guitar Pedal X describes the combination as chorus, detune, octave-up/down reverb, long-delay pad reverb, distortion and a low-pass filter in one box.
What does the Chorale switch do?
The Chorale switch selects between the two chorus modes. Set down, it gives a mixed chorus and detune sound that Guitar Pedal X describes as more subtle; set up, it gives a classic chorus. The chorus section is described by Hungry Robot as a lush two-mode chorus.
How many footswitches does the Wallflower have?
The Wallflower has two footswitches. The left switch is the Engage/Bypass footswitch for the whole pedal, and the right switch is a dedicated Distortion footswitch, so the Growth distortion can be switched in and out separately from the rest of the effects.
How much did the Wallflower cost?
Hungry Robot listed the Wallflower at $150 USD plus shipping. In Europe, Guitar Pedal X reported it available from Effekt Boutique for 229 euros or 200 pounds.
Where can I find the Wallflower manual?
According to Guitar Pedal X, archival details and a manual for the Wallflower can still be accessed on the Hungry Robot website.
Sources (4)
- The Wallflower, Hungry Robot Pedals
- THE WALLFLOWER, Hungry Robot
- Guitar Pedal X, Guitar Pedal X, 2026-05-15
- Guitar Pedal X, Guitar Pedal X, 2025-10-23
