Spaceman Sputnik I: Silicon Fuzz

The Spaceman Sputnik I: Silicon Fuzz is a compact fuzz pedal from Spaceman Effects, a Portland, Oregon builder. It carries the original Sputnik v1 circuit, but with a twist: instead of germanium, it runs on NOS silicon transistors. Spaceman describes the result as "an uncommonly wide orbit of fuzz tones; from smooth and vintage to splatty, sputtery, and completely off-the-rails"¹.

The pedal is a discrete, analog circuit using only through-hole components, with true-bypass switching via a soft-click footswitch. It is completely soldered and wired by hand in Portland, Oregon, and carries a limited lifetime warranty¹. It was released in October 2025 at $299, with a limited Olive Drab Cyrillic Edition at $359²¹. The maker's page currently lists it as sold out¹.

The controls: Range, Calibrate, Fuzz, Filter, Sync/Drift and Scan

The Sputnik I Silicon Fuzz keeps the control set of the germanium original. Guitar Pedal X's Stefan Karlsson maps the panel as Signal (volume), Scan (scramble/corruption), Range (fuzz gain), Drift/Sync (engage scan), Calibrate (tone), and a Filter engage switch³. The maker describes what each does:

The Filter switch is worth a note for players comparing voices: with Filter engaged you get a brighter and more searing tonality, as the core EQ gets a bass cut and mids scoop⁴. The Scan control itself is the updated version taken from the Spaceman Sputnik IIb¹, which Karlsson calls "a refined Scan mode - per the Sputnik IIb"⁴.

Drift mode

Drift Mode is where the Sputnik I stops behaving like a conventional fuzz. Switching the Sync/Drift toggle, in the maker's words, transforms the pedal, "unleashing synth-like tones, oscillation, pseudo-octaves, 8-bit artifacts, and more"¹. In this mode every parameter becomes highly interactive, including your guitar's own volume and tone controls, and the mini Scan control adds further precision. Spaceman's framing is simple: "Go subtle or go extreme - you can shape it, tame it, or let it run wild"¹.

Power and connections

The pedal runs on a 9V DC supply, negative center, through a 2.1mm jack, or on a 9V battery¹. Current draw is modest: 4.85 mA in bypass and 5.7 mA engaged¹, light enough that battery power is practical.

For external control there is an expression input: a 0-5V DC TRS jack, protected against over and reverse voltage¹. Input resistance is 1 megohm¹.

From the germanium Sputnik I to the silicon edition

The original Spaceman Sputnik I first came out in 2013⁵. The silicon edition, released in October 2025, is a variant of that circuit with the same controls; as Karlsson put it, "All the controls are the same as before - it just the type of transistors that has changed here"³. The maker describes it as featuring the original v1 circuit, powered by NOS silicon transistors¹.

The circuit itself is built from silicon transistors and a JFET. Karlsson's review identifies six silicon transistors and a BA17 JFET, using 2N3904, 2N4125 and 2N7000⁴; another account of the same review counts seven transistors instead.

One design change matters to players comparing the two: the Sputnik I has no input transformer, which the maker says makes it more lively while providing a wider frequency range¹.

How it differs from the germanium original

Guitar Pedal X reviewed the silicon edition as "an updated and upscaled version of the Sputnik I Germanium Fuzz"⁴. The differences the press found:

• Character: "a little more aggressive" than the original Sputnik I²
• Output: more volume, gain and range than the germanium edition⁴
• Trade-off: it does not quite have the germanium version's same harmonic grit³
• Circuit: no input transformer, for a livelier feel and wider frequency range¹

Karlsson, who has owned a germanium Sputnik I since picking up a pristine Red Cyrillic version in 2018 and calls it his favorite American fuzz since then⁵, summed up the comparison: "Near enough every bit as good as the original Germanium variant. This one doesn't quite have that same harmonic grit"³.

First Editions: Olive Drab, White, Black and Blue

The silicon Sputnik I shipped in four signed and numbered First Editions: Olive Drab, White, Black, and Blue¹. The White, Drab Olive and Black Editions were available for preorder on the Spaceman Effects Webstore, while the ultra-limited Blue Edition was only available through Spaceman dealers¹².

The limited-batch Olive Drab Edition has a Cyrillic engraved faceplate, custom knobs, and a smooth glass indicator jewel¹; Karlsson also notes it has unique knobs and a smooth lens cap². It went for $359 and is long since sold out⁴. A Blue Dealer edition completed the 2025 quartet⁴.

What reviewers said

Guitar Pedal X's Stefan Karlsson reviewed the pedal in November 2025 and found it "retains the original Germanium Edition's singing, searing tonality, with more volume, gain and range"⁴. When the variant was announced, he called it "a total no-brainer shoe-in for me"². At the end of 2025 it took a Silver award in Guitar Pedal X's best new fuzz pedals of the year, where Karlsson also noted that "The Spaceman Quartet of Gemini III and Sputnik I pairs was also a major fuzz event of the year for me!", pairing it with the Spaceman Gemini III³.

Who uses the Sputnik I

The best-documented player is Stefan Karlsson of Guitar Pedal X, who bought a pristine Red Cyrillic germanium version in 2018 and calls it his favorite American fuzz since then⁵. In his earlier saturation guide he described the germanium Sputnik I as "Germanium singing but quirky", noting it is based on the Fuzz Face circuit⁶.

Videos

Click to load

Questions