The Dr. No SkullFuzz is a handmade silicon fuzz pedal built by Dr. No Effects, and its most familiar form is unlike any other pedal on a pedalboard: the enclosure is a life-size human skull, with the circuit as its brain and two human-eye knobs serving as the Fuzz and Volume controls1. The maker describes it as a silicon fuzz, built by hand, and the Original SkullFuzz has been built since 201312.
The SkullFuzz line has grown into a family of versions and one-off builds. The same fuzz circuit appears in the Human Skull versions, the Art SkullFuzz, and a rectangular Box Version aimed at players who want something tour and pedalboard friendly34. Most editions sell in small numbered runs or as single handmade pieces, and many are listed as out of stock on the maker's webshop13.
What it does
The SkullFuzz is a fuzz effect: it pushes the guitar signal into heavy clipping for a saturated, sustaining tone. Dr. No Effects describes the circuit as "insane, versatile, and powerful," and that same circuit is shared across the Human Skull, Art and Box versions35. The maker has called the SkullFuzz its heavy fuzz effect since the pedal's early appearances at events like the 2016 Fuzzadelic Skullshow at Roadburn6.
The Original SkullFuzz is a limited, numbered and personalised series, each pedal coming with a custom handmade paper box1. The maker builds every unit by hand, a practice it extends across its whole range3.
The controls: Fuzz, Volume and the mini toggle
Control layout depends on the version, but the core is always two knobs and a switch.
| Control | What it does | Where |
|---|---|---|
| Fuzz knob | Sets the amount of fuzz | Eye knob on the skull; standard knob on the Box Version13 |
| Volume knob | Sets the output level | Eye knob on the skull; standard knob on the Box Version13 |
| Mini toggle | Selects between two fuzz voicings | Side switch on the skull; toggle on the Box Version13 |
On the Original SkullFuzz, the little switch on the side "creates a short circuit in the brain for a variation in Fuzz"1. On the Art SkullFuzz editions, the maker describes the same switch as choosing between regular and low-end fuzz57. The Box Version's mini toggle has two ways to change the character of the Fuzz, and its two eye balls are replaced by two ordinary knobs for Volume and Fuzz3.
The Art SkullFuzz editions use chickenhead knobs for Volume and Fuzz, which the maker says give tactile control for dialing in a tone5. Some one-off builds use custom Yellow Black Eye Knobs instead89.
Power: 9V, 100mA
The SkullFuzz runs on 9V with a 100mA current draw1. The Box Version shares the same 9V, 100mA specification3. The Art SkullFuzz editions use a 9V 2.1mm input jack57.
The 100mA current draw is higher than many simple analog fuzzes, so plan a power supply accordingly if the SkullFuzz sits on a shared pedalboard.
Human Skull, Art and Box versions
Dr. No Effects sells three main branches of the SkullFuzz, all with the same internal circuit34.
- Human Skull versions: the Original SkullFuzz in its life-size skull enclosure, plus flocked and colored variants such as the All Black Flocked SkullFuzz, finished with the maker's black flocking technique110.
- Art SkullFuzz: a cast-pedal version in a fiber-strengthened casting material housing, revived in 2025 in Silver, Black, Copper and Gold editions, each handsigned by Dr. No and shipped in a custom-made wooden silkscreened collector's box57.
- Box Version: the same circuit in a rectangular, pedalboard friendly housing, offered in a limited numbered run with a custom handmade silkscreen box protection cloth34.
The 2025 Art SkullFuzz run was announced as a limited edition in Silver, Black, Copper and Gold5, with each unit handsigned by Dr. No7.
Prices as listed on the maker's webshop, in euros:
| Version | List price | Status |
|---|---|---|
| Original SkullFuzz (human skull) | € 472.001 | Out of stock1 |
| Box Version | € 267.003 | Out of stock3 |
| Art SkullFuzz (Silver, Black, Copper, Gold) | € 475.0051112 | Out of stock7 |
| Art SkullFuzz Flock Edition | € 525.0013 | Limited, two units13 |
| All Black Flocked SkullFuzz | € 525.0010 | Out of stock10 |
Limited runs and one-off builds
Beyond the standard versions, Dr. No Effects produces small series and single pieces under its Analog Imaginarium banner, a category the maker describes as "a place dedicated to the Imagination"1415.
"So do you want your own unique one-off Dr. No SkullFuzz, fully custom-built with your ideas and vision integrated?"
Related Dr. No Effects fuzzes include the SkullFuzz Original, the Art SkullFuzz, the Siamese Twin SkullFuzz, the Flying SkullFuzz, the All Black Flocked SkullFuzz and the SkullFuzzy.
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Questions
How much does a Dr. No SkullFuzz cost?
The Original SkullFuzz in the life-size human skull enclosure was listed at € 472.00 on the maker's webshop. The Box Version, the same circuit in a rectangular housing, was listed at € 267.00. Art SkullFuzz editions in Silver, Black, Copper and Gold were listed at € 475.00 each. All of these were listed in euros, and most editions are currently out of stock.
Is the SkullFuzz Box Version the same circuit as the skull?
Yes. Dr. No Effects states that the Box Version's internal circuit remains the same as in the other two versions, the Human Skull versions and the Art SkullFuzz. The difference is the housing: the Box Version replaces the skull and its eye-ball knobs with a tour and pedalboard friendly box, two standard knobs for Volume and Fuzz, and the same mini toggle for changing the fuzz character.
How many SkullFuzz Box Versions were made?
The maker does not give a total production figure for the Box Version. It was offered in a limited, numbered run, fully made by hand, and each came with a custom handmade silkscreen box protection cloth. The Box Version is listed as out of stock on the maker's webshop.
Where can I buy a Dr. No SkullFuzz?
Dr. No Effects sells its pedals direct through its own webshop at drno-effects.com, with many SkullFuzz editions listed under the maker's Analog Imaginarium category. Several editions, including the Original SkullFuzz, the Box Version and the Art SkullFuzz editions, are listed as out of stock, and one-off builds are often marked not for sale.
Who builds Dr. No Effects pedals?
Every SkullFuzz is built by hand by Dr. No Effects, the maker founded and run by the builder who goes by Dr. No. The company states that 2027 marks twenty-five years of building its effects, and the SkullFuzz circuit itself has been built since 2013.
Sources (16)
- SkullFuzz Original, Dr. No effects webshop, 2026-08-01
- 3rd Eye SkullFuzz Red, Dr. No effects webshop, 2024-10-31
- SKULLFUZZ (BOX VERSION), Dr. No effects webshop, 2025-02-05
- NEW Dr. No Effects SkullFuzz!!!, Dr. No Effects, 2017-07-01
- THE ART SKULLFUZZ RETURNS IN EXTREMELY LIMITED RUN ONLY!, Dr. No Effects, 2025-06-29
- Dr.No's Fuzzadelic SkullShow at RoadBurn 2016, Dr. No effects, 2016-04-15
- Dr.No Effects Art SkullFuzz Copper Edition -, Dr. No Effects
- Yellow Black Flock SkullFuzz (Not for sale), Dr. No Effects, 2026-01-30
- Yellow Black Dr. No Art SkullFuzz, Dr. No effects webshop, 2026-04-19
- All Black Flocked Skullfuzz, Dr. No effects webshop, 2026-02-07
- Dr.No Effects Art SkullFuzz Gold Edition, Dr. No effects webshop, 2025-10-30
- Dr.No Effects Art SkullFuzz Black Edition -, Dr. No Effects, 2025-11-04
- The Art SkullFuzz Flock Edition, Dr. No effects webshop, 2025-10-30
- Flying SkullFuzz Dr. No's Analog Imaginarium Edition Dr. No effects webshop Dr. No effects webshop, Dr. No effects webshop, 2026-04-16
- Voodoo SkullFuzz Dr. No's Analog Imaginarium Edition, Dr. No effects webshop, 2025-03-28
- FROM AI TO ANALOG DR. NO SKULLFUZZ BUILD, Dr. No Effects, 2026-06-30
