Mythos Hephaestus Variable Fuzz Pedal

£129.99

On the menu for January 2026 are the Mythos Pedals Guitar Pedals, freshly added and carefully selected. These New units are available to order online with fast, secure delivery from trusted UK retailers. Read on for full details, specifications, demos, videos, reviews, and the best places to buy the Mythos Pedals Guitar Pedals today.


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Description

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On the menu for January 2026 are the Mythos Pedals Guitar Pedals, freshly added and carefully selected. These New units are available to order online with fast, secure delivery from trusted UK retailers. Read on for full details, specifications, demos, videos, reviews, and the best places to buy the Mythos Pedals Guitar Pedals today.

The Hephaestus started life as a simple take on the classic Jordan Boss Tone circuit. That little plastic box you plugged directing into your guitar to get that classic “Spirit in the Sky” fuzz sound. By adjusting the voltage to the circuit itself you get a very sporadic octave down effect, essential turning that little plastic fuzz box into the antioctavia.

The Hephaestus features a single external “Warning” knob that adjusts voltage of the unit. When the warning knob is set to maximum (fully clockwise) you get classic fuzz tones but once you hit 1 o’clock, the suboctave effect starts to happen. Continuing to turn the “Warning” knob down makes that octave effect more prevalent. It’s weird, unpredictable, but most importantly it’s incredibly musical. There are riffs to be found in the Hephaestus!

Internally there is a master volume so you can adjust the overall output of the pedal. The Hephaestus comes in a mini size format, features a single external “Warning” control, and has an internal volume trimmer for output level adjustment.

Key Features

  • Warning Knob – The Warning knob on the face of the pedal does not control volume, it doesn’t control gain, it controls voltage feeding the circuit! When maxed out the circuit sounds like the best of the classic circuit, but as you turn the knob down, you adjust the overall voltage entering the circuit. Once the knob hits 1 o’clock something magical happens, a sub octave begins to be introduced! When and where it appears will be very dependent on your guitar and amp setup but it creates a sub octave synth effect you’re sure to love! Further reducing the voltage or WARNING knob will cause even more octave things to happen while reducing the overall gain of the circuit.

Specifications

  • Warning Dial: Controls the voltage feeding the circuit.
  • Bypass: True Bypass
  • Size: Mini
  • Power: 9V DC Adapter (Not included)

Additional information

Weight 0.5 kg

Brand

Mythos Pedals

Mythos Pedals is a boutique guitar effects pedal company based in the United States, founded by Nathan Adams in 2013. The company is known for its high-quality, hand-crafted pedals that often draw inspiration from mythology, classic rock tones, and vintage gear.

Mythos Pedals offers a range of effects including overdrives, fuzzes, and delays, each designed with a focus on unique tonal characteristics and artistic design.

Their pedals are celebrated for their innovative circuitry, exceptional sound quality, and attention to detail, both in terms of performance and aesthetic appeal. Mythos Pedals has gained a dedicated following among guitarists who appreciate their blend of creativity, craftsmanship, and rich, dynamic tones.

Category

Guitar Pedals

Tags

Fuzz

A fuzz pedal is one of the earliest and most aggressive forms of distortion, turning your clean guitar signal into a thick, saturated wall of sound. It works by clipping the waveform almost flat, creating a compressed, gritty tone full of harmonic overtones. The result is raw, unruly, and unmistakable — from the sputtering breakup of vintage germanium circuits to the searing sustain of modern silicon designs. Fuzz pedals react strongly to your guitar’s volume and pickup choice, making them dynamic tools for expressive players.

Whether you’re chasing the classic tones of Hendrix and the Smashing Pumpkins or exploring heavy, experimental textures, fuzz remains a favourite for its personality and unpredictability. It can sound smooth and sustaining, or wild and velcro-like, depending on how it’s set up. A good fuzz pedal cuts through the mix while adding thickness and attitude, turning any riff or lead line into something bold and unmistakably alive.

New

This is brand new, fresh in, and a UK warranty is included. New Gear always comes from trusted UK music retailers.

Octave

An octave pedal shifts your guitar signal up or down by one or more octaves, blending the altered pitch with your original sound to create a fuller, more complex tone. It can add a deep, bass-like layer underneath your playing or a shimmering high octave on top for lead lines and solos. Classic analogue octave pedals often produce slightly gritty, organic sounds, while modern digital versions track more precisely and can offer multiple octave ranges.

Octave pedals are great for thickening single-note riffs, creating synth-style textures, or even mimicking bass parts when playing alone. They pair well with fuzz or overdrive pedals for massive, harmonically rich tones. Whether you’re after vintage Hendrix-style octave fuzz or a modern polyphonic sound that tracks chords cleanly, an octave pedal opens up a world of creative possibilities and adds real weight and character to your tone.

Synth

A synth pedal transforms your guitar signal into rich, layered tones that mimic the sounds of a synthesiser. Using pitch tracking and waveform generation, it can produce everything from deep bass lines to shimmering pads and futuristic leads. Synth pedals open up a wide creative range, blending the expressiveness of guitar playing with electronic textures, making them ideal for experimental sounds, ambient music, or adding a modern edge to classic riffs.

Volume

Volume pedals control the output level of a guitar signal using a foot-operated treadle. They allow smooth volume swells, dynamic control during playing, and easy muting between songs. Volume pedals can be placed at different points in the signal chain to either control overall loudness or adjust gain and drive behaviour when positioned before distortion or overdrive pedals.

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