What vintage pedal is the Fuzz Master General based on?

The Fuzz Master General is based on the Ace Tone FM-2 Professional Fuzz, a classic Japanese octave fuzz circuit. EarthQuaker Devices updated the design to improve the output level and add more tonal flexibility.

Where is the Fuzz Master General manufactured?

The pedal is built by hand in Akron, Ohio, in the United States. This ensures high-quality assembly and attention to detail common in EarthQuaker Devices products.

What does the 'Voice' toggle switch do?

The Voice toggle selects between three different clipping diode configurations: Germanium, Silicon, and Open. Each mode changes the compression, headroom, and harmonic texture of the fuzz.

How does the Germanium mode sound compared to Silicon?

Germanium clipping (Mode 1) provides a softer, warmer, and more vintage-style compression. Silicon clipping (Mode 2) is louder, brighter, and offers a more aggressive, modern crunch.

What is the 'Open' clipping mode?

The 'Open' mode (Mode 3) bypasses the clipping diodes entirely. This results in a massive volume boost, less compression, and a more touch-sensitive response compared to the other two modes.

Does this pedal have more volume than the original Ace Tone FM-2?

Yes, one of the primary design goals was to provide significantly more output. This allows the Fuzz Master General to easily exceed unity gain and push an amplifier into saturation.

How do I get the best octave-up effect?

To maximize the octave-up effect, it is recommended to use your guitar's neck pickup and play notes above the 12th fret. Rolling back the guitar's tone knob slightly can also help the octave effect stand out.

Is the Fuzz Master General a digital or analogue pedal?

It is a 100% analogue effects pedal. It uses traditional components like diodes and transistors to create its fuzz and octave effects rather than digital signal processing.

Can the Fuzz Master General do low-gain sounds?

Yes, the pedal has a sweeping fuzz range. At lower settings, it can produce a 'nearly clean' octave-up sparkle that adds harmonic complexity without heavy distortion.

What kind of power supply does the Fuzz Master General require?

Like most EarthQuaker Devices pedals, it requires a standard 9V DC power supply with a center-negative barrel. Using a high-quality isolated power supply is recommended to minimize noise.

Is the Fuzz Master General suitable for bass guitar?

While designed for guitar, its responsive tone control can dial in scooped bass frequencies. However, like many vintage-style octave fuzzes, it may lose some low-end definition compared to dedicated bass fuzz pedals.

How does it compare to the Electro-Harmonix Big Muff?

The Big Muff is a classic sustain-heavy fuzz with a thick mid-scoop, whereas the Fuzz Master General is an octave fuzz focused on upper-harmonic doubling. The Fuzz Master General offers a more biting, 'lo-fi' grit compared to the Big Muff's smooth wall of sound.

Gear article

EarthQuaker Devices Fuzz Master General Octave Fuzz Blaster

The EarthQuaker Devices Fuzz Master General is an analogue octave fuzz pedal designed as a reimagining of the vintage Ace Tone FM-2 Professional Fuzz. It features a versatile three-way clipping toggle and an expanded output range to provide modern utility for guitarists seeking classic upper-octave saturation.

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Overview and History

The Fuzz Master General is a boutique reimagining of the Ace Tone FM-2 Professional Fuzz, a Japanese circuit known for its distinct octave-up characteristics. Hand-built in Akron, Ohio, EarthQuaker Devices developed this model to address the limitations of the original vintage units, specifically focusing on increasing the volume output and expanding the tonal palette through selectable clipping diodes.

While the original Ace Tone units often suffered from a significant volume drop when engaged, the Fuzz Master General is engineered to provide a much higher output level, allowing it to drive amplifiers or other pedals in a modern signal chain more effectively.

Circuit Design and Controls

The pedal operates on a fully analogue signal path and features three primary control knobs and a toggle switch:

Fuzz: Adjusts the amount of saturation, ranging from subtle dirt to heavy compression.
Tone: A wide-ranging control that can sweep from cutting treble to a scooped bass response.
Level: Controls the overall output volume, offering significantly more gain than the vintage FM-2.

At the heart of the unit is a Voice toggle switch that selects between three clipping modes. Mode 1 utilizes Germanium diodes for a softer, more vintage-accurate response. Mode 2 uses Silicon diodes for a tighter, brighter, and more modern sound. Mode 3 is an 'Open' setting that removes the diodes for a louder, more touch-sensitive, and less compressed fuzz texture.

Sonic Character

The Fuzz Master General is characterized by its prominent upper-octave harmonic, which is most apparent when playing above the 12th fret using the neck pickup. The sound is described as 'characterful analogue grit,' capable of delivering nearly clean octave-up sparkle when the Fuzz control is set low.

As the Fuzz control is increased, the pedal transitions into a thick, compressed saturation. The 'Voice' toggle allows players to shift the texture from the smooth, saggy compression of germanium to the aggressive, biting attack of silicon, making it adaptable to various genres from psychedelic rock to modern stoner metal.

Comparison and Suitability

Compared to industry standards like the Electro-Harmonix Big Muff w/ Tone Wicker, the Fuzz Master General provides a more distinct frequency-doubling effect rather than just a wall of low-end distortion. While it lacks the extreme pitch-shifting capabilities of a Digitech Whammy Ricochet, it offers a more organic, analogue response that reacts to the player's pick attack.

It is ideally suited for guitarists who require a vintage-style octave fuzz but need the reliability and volume of a modern boutique pedal. It pairs well with other utility pedals, such as the Boss NS-2 Noise Suppressor to manage high-gain hiss, or a Boss DD-3T for spatial depth.

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Frequently asked questions

What vintage pedal is the Fuzz Master General based on?: The Fuzz Master General is based on the Ace Tone FM-2 Professional Fuzz, a classic Japanese octave fuzz circuit. EarthQuaker Devices updated the design to improve the output level and add more tonal flexibility.
Where is the Fuzz Master General manufactured?: The pedal is built by hand in Akron, Ohio, in the United States. This ensures high-quality assembly and attention to detail common in EarthQuaker Devices products.
What does the 'Voice' toggle switch do?: The Voice toggle selects between three different clipping diode configurations: Germanium, Silicon, and Open. Each mode changes the compression, headroom, and harmonic texture of the fuzz.
How does the Germanium mode sound compared to Silicon?: Germanium clipping (Mode 1) provides a softer, warmer, and more vintage-style compression. Silicon clipping (Mode 2) is louder, brighter, and offers a more aggressive, modern crunch.
What is the 'Open' clipping mode?: The 'Open' mode (Mode 3) bypasses the clipping diodes entirely. This results in a massive volume boost, less compression, and a more touch-sensitive response compared to the other two modes.
Does this pedal have more volume than the original Ace Tone FM-2?: Yes, one of the primary design goals was to provide significantly more output. This allows the Fuzz Master General to easily exceed unity gain and push an amplifier into saturation.
How do I get the best octave-up effect?: To maximize the octave-up effect, it is recommended to use your guitar's neck pickup and play notes above the 12th fret. Rolling back the guitar's tone knob slightly can also help the octave effect stand out.
Is the Fuzz Master General a digital or analogue pedal?: It is a 100% analogue effects pedal. It uses traditional components like diodes and transistors to create its fuzz and octave effects rather than digital signal processing.
Can the Fuzz Master General do low-gain sounds?: Yes, the pedal has a sweeping fuzz range. At lower settings, it can produce a 'nearly clean' octave-up sparkle that adds harmonic complexity without heavy distortion.
What kind of power supply does the Fuzz Master General require?: Like most EarthQuaker Devices pedals, it requires a standard 9V DC power supply with a center-negative barrel. Using a high-quality isolated power supply is recommended to minimize noise.
Is the Fuzz Master General suitable for bass guitar?: While designed for guitar, its responsive tone control can dial in scooped bass frequencies. However, like many vintage-style octave fuzzes, it may lose some low-end definition compared to dedicated bass fuzz pedals.
How does it compare to the Electro-Harmonix Big Muff?: The Big Muff is a classic sustain-heavy fuzz with a thick mid-scoop, whereas the Fuzz Master General is an octave fuzz focused on upper-harmonic doubling. The Fuzz Master General offers a more biting, 'lo-fi' grit compared to the Big Muff's smooth wall of sound.