The Big Muff Pi 2 is a dual op-amp fuzz pedal born from a rediscovered 1970s circuit design by Electro-Harmonix's Bob Myer. Josh Scott of JHS Pedals decoded Myer's original hand-drawn schematic and brought this forgotten topology to life. The result sits apart from the classic Big Muff Pi whilst maintaining the core sonic DNA–a slightly fuzzier, more dynamic character with a crispy top end and booming low response that appeals to fuzz enthusiasts seeking something beyond the standard formula.
Housed in a compact nano die-cast chassis measuring 4.5 x 2.75 x 2.1 inches, the pedal employs three intuitive controls. The Sustain knob governs distortion range from medium grit to full fuzz intensity; the Tone control spans brash treble to deep bass via a high-pass sweep; Volume sets overall output level. True bypass switching with silent relay engagement comes standard, plus a first for Big Muff designs–momentary footswitch action accessible by holding the switch for half a second or longer. Power delivery via 9V battery draws only 15mA, or use an optional centre-negative 9.6VDC adapter (200mA maximum, 12VDC ceiling).
The circuit employs two Dual Op-Amps configured for a unique gain structure that sits between refined and wild. Input impedance measures 117kΩ; output impedance maxes at 2.7kΩ, ensuring solid interface with typical amplifier inputs. Status LED illuminates when engaged, providing visual feedback during live performance. Momentary action can be disabled if preferred, allowing straightforward latching bypass behaviour.
Features
- Dual op-amp fuzz circuit design rediscovered and engineered from original 1970s schematics
- Nano sized die-cast chassis, 4.5 x 2.75 x 2.1 inches, compact pedalboard footprint
- True bypass with silent relay switching and latching or momentary footswitch modes
- Three-control layout: Sustain, Tone, and Volume for intuitive real-time adjustment
- Input impedance 117kΩ, output impedance maximum 2.7kΩ for clean signal interfacing
- Power via 9V battery included or optional 9.6VDC centre-negative adapter, 15mA draw
- Status LED illuminates effect engagement; momentary action toggle disableable via internal switch
- Input and output jacks positioned right and left sides respectively for flexible cable routing
Warranty & Returns
All New products are covered by the manufacturers new warranty. Please check their website for the length of warranty and warranty conditions. If an item you receive is faulty get in touch with us ASAP. Second Hand products come with a 4 week warranty from us. If there is an issue let us know ASAP! This covers normal use and does not cover accidental damage, misuse, wrong power plugged into it, modding, water damage or any other damage caused by mistreatment. Just treat it nice and all will be good!
Shipping
We send A LOT of packages every week so don't worry about the shipping side of things!
We've never lost a thing and your awesome new gear will be packed up really well to avoid any damage in transit.
If your order comes in before 2pm we will ship it same day. Most of the time we pack things up all the way to 4pm so just call if you need it to leave same day after 2pm.
We ship mainly with Australia Post but may use a courier depending on location and size of the package.
Free Post ships with Australia Post standard and expected shipping times are between 4-6 business days depending on location. It will be longer to outside of metro and rural areas.
Express Post will usually be with you next business day in metro areas of QLD, NSW, SA, VIC and TAS. WA will take 2 days to metro and extra days after that to out side metro and rural areas.
Everything we ship has a tracking number with the exception of some power cables and smaller envelope packages. You will be emailed tracking once your order has been shipped!
Videos
The Big Muff Pi 2 is a dual op-amp fuzz pedal born from a rediscovered 1970s circuit design by Electro-Harmonix's Bob Myer. Josh Scott of JHS Pedals decoded Myer's original hand-drawn schematic and brought this forgotten topology to life. The result sits apart from the classic Big Muff Pi whilst maintaining the core sonic DNA–a slightly fuzzier, more dynamic character with a crispy top end and booming low response that appeals to fuzz enthusiasts seeking something beyond the standard formula.
Housed in a compact nano die-cast chassis measuring 4.5 x 2.75 x 2.1 inches, the pedal employs three intuitive controls. The Sustain knob governs distortion range from medium grit to full fuzz intensity; the Tone control spans brash treble to deep bass via a high-pass sweep; Volume sets overall output level. True bypass switching with silent relay engagement comes standard, plus a first for Big Muff designs–momentary footswitch action accessible by holding the switch for half a second or longer. Power delivery via 9V battery draws only 15mA, or use an optional centre-negative 9.6VDC adapter (200mA maximum, 12VDC ceiling).
The circuit employs two Dual Op-Amps configured for a unique gain structure that sits between refined and wild. Input impedance measures 117kΩ; output impedance maxes at 2.7kΩ, ensuring solid interface with typical amplifier inputs. Status LED illuminates when engaged, providing visual feedback during live performance. Momentary action can be disabled if preferred, allowing straightforward latching bypass behaviour.
Features
- Dual op-amp fuzz circuit design rediscovered and engineered from original 1970s schematics
- Nano sized die-cast chassis, 4.5 x 2.75 x 2.1 inches, compact pedalboard footprint
- True bypass with silent relay switching and latching or momentary footswitch modes
- Three-control layout: Sustain, Tone, and Volume for intuitive real-time adjustment
- Input impedance 117kΩ, output impedance maximum 2.7kΩ for clean signal interfacing
- Power via 9V battery included or optional 9.6VDC centre-negative adapter, 15mA draw
- Status LED illuminates effect engagement; momentary action toggle disableable via internal switch
- Input and output jacks positioned right and left sides respectively for flexible cable routing
Warranty & Returns
All New products are covered by the manufacturers new warranty. Please check their website for the length of warranty and warranty conditions. If an item you receive is faulty get in touch with us ASAP. Second Hand products come with a 4 week warranty from us. If there is an issue let us know ASAP! This covers normal use and does not cover accidental damage, misuse, wrong power plugged into it, modding, water damage or any other damage caused by mistreatment. Just treat it nice and all will be good!
Shipping
We send A LOT of packages every week so don't worry about the shipping side of things!
We've never lost a thing and your awesome new gear will be packed up really well to avoid any damage in transit.
If your order comes in before 2pm we will ship it same day. Most of the time we pack things up all the way to 4pm so just call if you need it to leave same day after 2pm.
We ship mainly with Australia Post but may use a courier depending on location and size of the package.
Free Post ships with Australia Post standard and expected shipping times are between 4-6 business days depending on location. It will be longer to outside of metro and rural areas.
Express Post will usually be with you next business day in metro areas of QLD, NSW, SA, VIC and TAS. WA will take 2 days to metro and extra days after that to out side metro and rural areas.
Everything we ship has a tracking number with the exception of some power cables and smaller envelope packages. You will be emailed tracking once your order has been shipped!