The Function f(x) Cannon Dual Fuzz is a dual fuzz pedal that puts two classic fuzz voices in one enclosure. The maker describes it as a 2-in-1 mashup of the Tycobrahe Octavia and the AstroTone Fuzz, also known as the Sam Ash Fuzzbox, and says the circuits can be run separately or stacked together for a really gnarly fuzz with delightful octave up overtones1. It belongs to the wider family of fuzz pedals, and Function f(x) also builds related designs such as the Clusterfuzz and the Octavus.
Two fuzz circuits in one pedal
Each of the two circuits has its own Volume and Fuzz controls, so the Octavia side and the AstroTone side can be set and switched independently1. The Octavia side carries the octave-up overtones that circuit is known for, and it also features an octave-defeat switch, which removes those octave up overtones when you want a straight fuzz from that side12.
One thing the Cannon leaves out is a tone knob. Function f(x) says it dropped the nearly useless tone control from the AstroTone circuit, so shaping comes from the Fuzz controls, the octave-defeat switch and your guitar rather than an onboard EQ12.
Where it came from
The pedal is a collaboration. Function f(x) says the Cannon was conceived by, created for, and named after Chicago-area bluesman Toronzo Cannon, and on its artist page the maker adds that it created the pedal in partnership with him13. The maker's page also notes that Gary Clark Jr. referred to it as one of his "go-to" pedals in 20242.
"This pedal was conceived by, created for, and named after Chicago-area bluesman Toronzo Cannon."
Power, switching and practicalities
The Cannon runs on 9V DC operation, which Function f(x) calls the industry standard, and draws 35mA when engaged and 20mA when bypassed1. The bypass is a soft-touch, relay-based true bypass switching system, so switching is handled by a relay rather than a mechanical footswitch1.
With a 35mA draw, the Cannon is beyond what a battery-powered supply chain is typically sized for on a daisy chain with other pedals; plan your power supply accordingly. The maker specifies 9V DC operation1.
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Mike Hermans
Questions
What is the Function f(x) Cannon Dual Fuzz based on?
Function f(x) describes the Cannon as a 2-in-1 mashup of a pair of classic fuzz circuits: the Tycobrahe Octavia and the AstroTone Fuzz, also known as the Sam Ash Fuzzbox. Each side keeps the character of its original circuit, with the Octavia side carrying the octave-up overtones and the AstroTone side providing the straight fuzz voice.
Can the two fuzzes in the Cannon be used together?
Yes. According to Function f(x), the circuits can be run separately or stacked together. The maker describes the stacked combination as a really gnarly fuzz with delightful octave up overtones, so stacking the Octavia and AstroTone sides is a core part of how the pedal is meant to be used.
What does the octave-defeat switch do?
The Octavia side of the Cannon features an octave-defeat switch. Switching it removes the octave up overtones that the Octavia circuit produces, letting that side run as a straight fuzz when you do not want the ring of upper octave content in your tone.
Does the Cannon Dual Fuzz have a tone control?
No. Function f(x) says it dropped the tone control from the AstroTone circuit, calling it nearly useless. Each side of the pedal has Volume and Fuzz controls, and shaping is left to those knobs, your guitar's tone control and the octave-defeat switch.
Is the Cannon Dual Fuzz true bypass?
Yes. The pedal uses a soft-touch, relay-based true bypass switching system, the same in-house switching approach Function f(x) has used on its other pedals.
How much current does the Cannon Dual Fuzz draw?
Function f(x) lists the current draw at 35mA when the pedal is engaged and 20mA when bypassed. It runs on 9V DC, which the maker calls the industry standard.
Who is the Cannon Dual Fuzz named after?
The pedal was conceived by, created for, and named after Toronzo Cannon, the Chicago-area blues guitarist. Function f(x) says it created the pedal in partnership with him, and Gary Clark Jr. referred to it as one of his go-to pedals in 2024.
Sources (3)
- The Cannon Dual Fuzz, Function f(x), 2026-09-12
- The Cannon Dual Fuzz by Function f(x), Function f(x), 2017-06-13
- Toronzo Cannon, Function f(x), 2020-05-30
