The Fredric Effects Square Wave Fuzz is a fuzz pedal that remakes the classic Univox/Shin Ei Square Wave Fuzz, a vintage design known for a hard, squared-off fuzz voice. Fredric Effects describes the sound as "A full-on glitchy and gated effect. Great for 60s style garage band fuzz, Jesus & Mary Chain style feedback workouts, pure noise/static experiments. It's not subtle!"1
What it does
The pedal takes the original Square Wave Fuzz circuit and adds one main feature: a clipping switch with two settings. The germanium setting keeps the clipping of the original Univox/Shin Ei design, while the silicon setting is described by the maker as giving more crunch1. Germanium and silicon clipping components shape the fuzz differently, so the switch effectively gives two versions of the pedal's voice in one box.
As a square wave fuzz, it sits at the extreme end of the fuzz pedal family rather than working as a mild dirt box. The maker's own framing points it at garage rock fuzz tones, feedback-heavy playing in the style of The Jesus and Mary Chain, and outright noise experiments, and the description ends with the plain warning that it is not subtle1. Players looking for a more conventional or multi-voice fuzz from the same maker may want to compare it with the Fredric Effects DuoFace, the Fredric Effects Standard Fuzz Machine, or the Fredric Effects Deeply Unpleasant Companion.
Price and availability
Fredric Effects lists the Square Wave Fuzz at £125 GBP on its product page, dated 26 October 20261. The price is given in pounds sterling as listed by the UK maker; it is not converted here.
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Questions
What is the Fredric Effects Square Wave Fuzz based on?
Fredric Effects describes it as a new version of the classic Univox/Shin Ei Square Wave Fuzz, a vintage square wave fuzz design. The pedal keeps the germanium clipping of the original and adds a silicon clipping option on a switch, so it covers both the vintage character and a crunchier take on the same circuit.
What does the clipping switch do?
The clipping switch gives two tonal options: germanium clipping like the original Univox/Shin Ei design, and silicon clipping for more crunch. Germanium clipping is the vintage-flavored setting, while silicon shifts the pedal toward a harder, crunchier fuzz voice.
What kind of sounds is it for?
Fredric Effects calls it a full-on glitchy and gated effect, suggesting 60s style garage band fuzz, Jesus & Mary Chain style feedback workouts, and pure noise and static experiments. The maker's own description notes it is not subtle, so it is aimed at players who want an aggressive, squared-off fuzz rather than a mild overdrive.
Sources (1)
- Square Wave Fuzz, fredric.co.uk
