The Carl Martin HeadRoom Mini Dual Channel Digital Spring Reverb is a compact spring reverb pedal released on 25 March 2025. It is a smaller, updated take on the original HeadRoom units from 2011, with the spring reverb sound recreated digitally and, for the first time in the line, stereo inputs and outputs.1
What it is and what it does
The HeadRoom Mini is a spring reverb pedal whose effect is produced by digital signal processing built into an analog circuit. Carl Martin set out to make a convincing digital recreation of the original HeadRoom Spring Reverb, something the maker describes as a major challenge, and the project took 1.5 years of development before the pedal was complete.1
Pedal of the Day's reviewer described the result as "providing a wonderful, ambient sonic playground", and added: "Really loving the sounds coming out of this pedal."1
How it differs from the original HeadRoom
The Mini builds on the original HeadRoom units released in 2011, but, as Pedal of the Day put it, "this one has been both shrunk down in size and updated in tone and functionality." The reviewer called the addition of stereo I/O "one of the biggest upgrades in HeadRoom Mini."1
| Original HeadRoom (2011) | HeadRoom Mini | |
|---|---|---|
| Size | Full-sized unit | Shrunk down for pedalboards1 |
| Tone and functionality | Original circuit | Updated1 |
| Spring reverb | Original circuit | Digital recreation of the original1 |
| Stereo I/O | Not mentioned | Yes, one of the biggest upgrades1 |
The reason for the smaller format was practical. According to Pedal of the Day, "Many players loved the spring reverb tone but found it difficult to accommodate the full-sized unit in their setup," so Carl Martin produced a version that fits a pedalboard more easily.1
Before release, the HeadRoom Mini was sent out for testing in recording studios worldwide, according to Pedal of the Day's review.1
Where it sits in the reverb field
Spring reverb is one of several approaches to the effect covered on the site's Reverb Pedals page, which gathers reverb pedals of every kind, from digital spring designs like this one to plate, hall and shimmer units.
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Questions
How is the HeadRoom Mini different from the original HeadRoom?
The Mini builds on the original HeadRoom units released in 2011, but has been shrunk down in size and updated in tone and functionality. The biggest upgrade is the addition of stereo I/O, and the spring reverb sound is now a digital recreation of the original circuit. Carl Martin made the smaller version because many players loved the spring reverb tone but found it difficult to accommodate the full-sized unit in their setup.
Is the Carl Martin HeadRoom Mini analog or digital?
It is a digital spring reverb: the DSP was integrated into an analog circuit. Carl Martin says achieving a convincing digital recreation of the original HeadRoom Spring Reverb was a major challenge, and the pedal took 1.5 years of development before its release on 25 March 2025.
Does the HeadRoom Mini have stereo inputs and outputs?
Yes. Pedal of the Day's review names the addition of stereo I/O as one of the biggest upgrades in the HeadRoom Mini compared with the original HeadRoom.
Why did Carl Martin make a smaller HeadRoom?
Many players loved the spring reverb tone but found it difficult to accommodate the full-sized unit in their setup, so Carl Martin produced a smaller version. The pedal was also sent out for testing in recording studios worldwide before its release.
Sources (1)
- Carl Martin HeadRoom Mini Dual Channel Digital Spring Reverb, Pedal of the Day (www.pedal-of-the-day.com), 2025-03-25
