The ZVEX Vexter Fuzz Factory is the lower-priced version of ZVex's best-known pedal: a five-knob germanium fuzz that ZVex describes as covering "tight, radically fuzzy sounds that gate off instantly when you stop playing, to intermodulating oscillations that fight for control of your guitar as your notes decay, to shortwave radio sounds, ripping velcro and octave-like fuzz"1. It is a self-oscillating fuzz effect pedal built around two new old-stock 1960s germanium transistors, and its circuit is not modeled after any classic fuzz design23.
The Vexter line exists to make the Fuzz Factory more affordable. The parts inside are identical to the hand-painted model; the difference is the finish, with UV-printed artwork replacing hand painting14. The current 25th Anniversary Vexter Series lists at $229.00 USD1.
From velcro sputter to self-oscillating squeals
The Fuzz Factory's range is what sets it apart from a conventional fuzz. Guitar World's review describes it as unlocking "everything from Velcro-like sputter and gating to infinite, self-oscillating synthy squeals" alongside classic Fuzz Face sounds2. In the magazine's best-fuzz buying guide, its writers put the spread another way: "From smooth, dynamic Fuzz Face-like tones to thick, gated 'Velcro' textures and wild, self-oscillating, synth-like squeals, the sheer sonic range is staggering"4.
The pedal earns that range through its five controls, which are not tone controls in the usual sense. As Pedal of the Day explains, "Although the five knobs are named for the parameters over which they seem to have the most control, they are controls for various operating levels and biases, and basically shape you a personalized fuzz"3. Guitar World's buying guide adds that the knobs are notoriously interactive, and a slight tweak to one can completely alter the others, rewarding players who love to tinker4.
| Control | What it does |
|---|---|
| Volume | Output volume2 |
| Gate | Kills unwanted buzz, hiss or feedback; can also tune the feedback pitch2 |
| Comp | Adjusts the attack character of the fuzz; left for softer, right for harder and more immediate2 |
| Drive | Dials in the amount of distortion when running the pedal as a traditional fuzz2 |
| Stab | Regulates the voltage supplied to the germanium transistors2 |
The Stab knob is the one most players ask about. Very basically, Stability regulates the voltage supplied to the pedal's internal germanium transistors: "By starving or feeding the circuit power, it dictates whether the pedal behaves like a 'normal' fuzz or a spitting, sputtering noise machine"2. Because the pedal can be noisy, the Gate control is there to fully kill any unwanted buzz, hiss or feedback, and it can even be used to tune the feedback pitch2.
Power and bypass
The Vexter Fuzz Factory runs on a 9V DC center-negative supply or a 9V battery, with a current draw of about 4mA2. It includes an on/off LED and a center-negative DC power jack1. Bypass is true bypass2. Analog Man's page for the original Vexter notes internal power filtering designed to stabilize any type of 9V adapter or 9V battery25.
The ~4mA draw makes this an easy pedal for any 9V power supply, and the battery option means it can run standalone on a small board.
How the Vexter differs from the hand-painted Fuzz Factory
The Vexter Series began in late 2004, when Z.Vex Effects announced the silkscreened Vexter Series Fuzz Factory5. The idea was simple: the same sound and parts as the original hand-painted Fuzz Factory, updated with an on/off LED and a DC power jack that works with Boss-type 9VDC adapters, at a lower price because the enclosure is silkscreened rather than hand-painted5. Jason Myrold designed the original silkscreen artwork, black and green over a hand-polished, lacquered aluminum enclosure5.
Current Vexter pedals carry UV-printed art instead of silkscreen, and Guitar World's review notes that while the innards are the same, this version is assembled in Taiwan2. ZVex itself states the position plainly: "The parts inside Vexters are identical to the hand painted pedals"6. Guitar World's buying guide sums up the appeal: "The Vexter Series version keeps the original's legendary, expertly built circuit but swaps the hand-painted graphics for a UV-printed artwork, making the magic of the Fuzz Factory more attainable than ever"4.
Versions: Fat, Vertical, Fuzz Factory 7 and the 25th Anniversary run
The Fuzz Factory family extends beyond the standard Vexter. Guitar World's review lists the hand-painted Fuzz Factory, the Fat Fuzz Factory with a bass switch, and the Fuzz Factory 7 as the options2.
- Fat Fuzz Factory Vexter: a version of the Fuzz Factory with a three-position mini toggle switch. Setting 1 is a standard Fuzz Factory; settings 2 and 3 introduce "low" and "lower" frequencies to manipulate, oscillate and mutate. ZVex says it sounds fantastic on both guitar and bass. The 25th Anniversary Vexter version carries UV printed graphics, and the maker's page lists it as sold out6.
- Vertical Vexter Fuzz Factory: the same fuzz tones in a vertical enclosure, listed at $199 when MusicRadar covered its release in November 20177.
- Fuzz Factory 7 USA Vexter: built around two NOS 1960s GT308 germanium transistors, with a passive tone control on its own switch to roll off high end. These pedals are hand-wired and made in the USA, and Guitar Pedal X describes the standard Fuzz Factory 7 Vexter as a very slightly lower cost, non-hand-painted version8910.
- 25th Anniversary Vexter Series: the current Fuzz Factory Vexter, featuring UV printed art, with parts identical to the hand-painted model1.
Beyond the Fat Fuzz Factory, ZVEX has also issued the Fuzz Factory 7, a version of the circuit in pedal form that MusicRadar reported was refinished with a UV paint job on the Fuzz Factory 7 USA Vexter98.
What reviewers said
Guitar World's review of the Vexter Fuzz Factory gave it high marks for build quality and called it a modern classic. The reviewer's verdict: "There aren't many pedals that can be considered a modern classic, but the Z.Vex Fuzz Factory is most definitely one of them"2. The same review found it deeply inspiring and massively creative, rewarding players willing to experiment2.
Pedal of the Day, reviewing the pedal in August 2023, called it one of ZVEX's most beloved pedals and wrote that "this classically un-classic fuzz takes you to the breaking point of musical sanity, and then shoves you right over"3. The site's take on who it suits: "If you love experimenting with sounds and turning lots of knobs, you'll love everything they make"3.
"There aren't many pedals that can be considered a modern classic, but the Z.Vex Fuzz Factory is most definitely one of them."
On price, sources differ slightly across dates: the maker's current page lists $229.001, Guitar World's review gives a launch price of $2292, and guitar.com reviews from 2023 and 2025 both cite $1991112. The current maker figure is the one to rely on.
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Questions
Does the ZVex Vexter Fuzz Factory sound the same as the hand-painted one?
Yes. ZVex states that the parts inside Vexter pedals are identical to the hand-painted pedals, and the Vexter keeps the original circuit while swapping the hand-painted graphics for UV-printed artwork. The only differences are cosmetic: the finish, and in current versions assembly in Taiwan rather than hand-painting.
Does the Fuzz Factory take a battery?
Yes. The Vexter Fuzz Factory runs on a 9V DC center-negative power supply or a 9V battery, drawing about 4mA. It includes an on/off LED and a center-negative DC power jack, and internal power filtering is described as stabilizing any type of 9V adapter or battery.
What does the Stab knob do on a Fuzz Factory?
Stab, short for Stability, regulates the voltage supplied to the pedal's internal germanium transistors. By starving or feeding the circuit power, it dictates whether the pedal behaves like a normal fuzz or a spitting, sputtering noise machine. It is one of five notoriously interactive knobs.
Where is the Vexter Fuzz Factory made?
Current Vexter Fuzz Factory pedals feature UV-printed artwork and are assembled in Taiwan, according to Guitar World's review. The hand-painted Fuzz Factory models, such as the Fuzz Factory 7 USA Vexter, are hand-wired and made in the USA.
Does the Fuzz Factory use germanium transistors?
Yes. The Vexter Fuzz Factory uses two new old-stock 1960s germanium transistors, hand-selected by Z.Vex. The circuit is not modeled after any classic fuzz design. A silicon version also exists as a separate product.
Is the Vexter Fuzz Factory the same circuit as the hand painted one?
Yes. ZVex says the parts inside Vexters are identical to the hand-painted pedals, and the Vexter Series version keeps the original circuit. The lower price comes from the printed or silkscreened finish rather than any change to the electronics.
Sources (12)
- Fuzz Factory Vexter, ZVEX Effects
- Z.Vex Vexter Fuzz Factory review, Guitar World, 2026-09-14
- ZVEX Effects Fuzz Factory Vexter, Pedal of the Day, 2023-08-10
- Best fuzz pedals 2026: add some filth to your sound with these essential pedalboard effects, Guitar World, 2022-06-09
- Z.Vex Effects, Analog Man (analogman.com), 2015
- Fat Fuzz Factory Vexter, ZVEX Effects
- Z.Vex finally releases Vertical Vexter Fuzz Factory pedal, MusicRadar, 2017-11-28
- Fuzz Factory 7 USA Vexter, ZVEX Effects
- ZVEX Effects gives the Fuzz Factory 7 a UV makeover with the USA Vexter edition, MusicRadar, 2023-02-07
- Guitar Pedal X, Guitar Pedal X, 2024-03-11
- Ritual Devices Grimalkin: wild fuzz that’s never knowingly sensible, Guitar.com, 2023-10-23
- EarthQuaker Devices Rancho de la Luna Dirt Transmitter review, guitar.com, 2025-08-20
