The Expresso FX Custom Fuzz Bender MkI "Mini" is a hand wired germanium fuzz pedal from Expresso FX, a builder run by Sofiane Tebboune. The maker describes the Fuzz Bender Mk I as "a recreation of the earliest three-transistor-based fuzz circuit from the Bender family", built in a compact Hammond enclosure with new old stock (NOS) components throughout1. It sits in the smaller "Mini" branch of the Expresso FX fuzz range, alongside the Fuzz Bender Mk I.V "Mini" and the Germanium Fuzz "Mini", and relates to the larger Fuzz Bender MkII and Fuzz Bender MkII "Vintage" pedals2.
The controls
The Mini keeps the layout simple: the classic Level control sets the pedal's output level, Attack sets the fuzz, and on top of those two the pedal adds a Filter knob, positioned as the lower middle knob, that helps control the pedal's low end2. That third control is the practical difference from a plain two-knob fuzz: on a germanium circuit, taming the bass response is often the difference between a fuzz that sits in a band mix and one that turns to mud under a distorted amp, and the Filter knob gives the player that adjustment on the fly1.
Circuit and components
The heart of the pedal is its transistor set. It ships with a Newmarket CV7007 in Q1, a Mullard OC82D in Q2 and a Mullard OC42 in Q3, all hand selected NOS germanium1. Germanium transistors are the traditional choice for early Bender-style fuzzes, and hand selection matters because germanium parts vary widely unit to unit.
The rest of the board follows the same NOS approach:
- NOS Mullard "Mustard" C296 polyester capacitors2
- NOS Allen Bradley carbon composition resistors1
- Alpha 16mm potentiometers1
- Lead free, silver-based solder1
- Premium 22 AWG solid core silver-plated copper wire with Teflon insulation, which the maker describes as being for superior signal transmission1
Because the pedal is built around hand selected NOS germanium transistors, the exact transistor complement depends on the maker's stock at the time of build. The shipped configuration Expresso FX specifies is Newmarket CV7007, Mullard OC82D and Mullard OC421.
Build and hardware
Expresso FX describes the pedal as fully hand wired, housed in a genuine Hammond aluminum enclosure powder coated in Green Hammertone, professionally finished and measuring 120 x 94.5 x 34mm (W x D x H)1. The jacks are Premium Cliff UK, and the pedal is true bypass1. The maker backs the build with a 3 year warranty1.
Where it sits in the range
The MkI Mini is the compact, three-transistor take on the Bender family in Expresso FX's lineup. Players who want more controls can look at the Fuzz Bender MkII, which Delicious Audio notes received performance and reliability tweaks over the MKI in its 2025 writeup, or the Fuzz Bender "Mojo Edition" and Fuzz Bender Mk I.V. For other germanium fuzzes from the same builder, see the Germanium Fuzz, the Germanium CV7005 Fuzz and the Custom Ge/Si Fuzz, or browse the full Fuzz Pedals type page.
Questions
Is the Expresso FX Fuzz Bender MkI Mini true bypass?
Yes. Expresso FX lists the Custom Fuzz Bender MkI Mini as true bypass, so the pedal takes itself fully out of the signal path when switched off. Combined with the premium Cliff UK jacks and 22 AWG silver-plated copper wiring with Teflon insulation, the maker's aim is clean signal transmission through the pedal whether it is on or off.
Who designs Expresso FX pedals?
Expresso FX pedals are designed by Sofiane Tebboune, who speaks for the company on its product pages. The Custom Fuzz Bender MkI Mini is described as fully hand wired, and the maker sources rare new old stock components, including Mullard capacitors and germanium transistors, for its builds.
What transistors are in the Fuzz Bender MkI Mini?
The pedal uses hand selected NOS germanium transistors and ships with a Newmarket CV7007 in Q1, a Mullard OC82D in Q2 and a Mullard OC42 in Q3. That three-transistor arrangement follows the earliest Bender family fuzz circuit the pedal recreates.
What finishes does the Fuzz Bender MkI Mini come in?
Expresso FX offers the Custom Fuzz Bender MkI Mini in two enclosure finishes: Antique Copper Hammertone and Green Hammertone. The enclosure itself is a genuine Hammond aluminium box, professionally powder coated.
Is the Fuzz Bender MkI Mini hand wired?
Yes. Expresso FX describes the pedal as fully hand wired, using lead free silver-based solder, Alpha 16mm potentiometers, premium 22 AWG solid core silver-plated copper wire with Teflon insulation, and NOS Allen Bradley carbon composition resistors and Mullard Mustard capacitors.
How long is the warranty on the Fuzz Bender MkI Mini?
Expresso FX gives the Custom Fuzz Bender MkI Mini a 3 year warranty, as stated on the maker's product page.
Sources (2)
- Custom Fuzz Bender MkI “Mini”, Expresso FX, 2026-04-19
- Custom Fuzz Bender MkI “Mini”, Expresso FX, 2026-04-19
