From private collection up for sale astonishingly preserved legendary USA NYC made Electro Harmonix Big Muff Pi V5 from 1978, Op Amp Tone-Bypass version.

Fully working, and complete with box, warranty card, description manual and boxed E-H 9V AC/DC Adapter, both pedal and adapter still have they’re plastic wrap, all of that make this piece extremely rare and a juicy collectible.

Photos speak for themselves.

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Follows description by Equipboard:

Immerse in the raw, vintage tones with the Electro-Harmonix "Op-Amp" Big Muff Pi V5. An evolution of the V4, this pedal incorporates the same revered op-amp circuitry, seamlessly blending the old and new. Unique to this model is the highly sought-after tone bypass feature, delivering a flatter equalization, more pronounced distortion, and a slight decibel boost. This pedal is not just about nostalgia, it's about capturing the spirit and essence of the late '70s rock scene. 

Key Features:

• Op-amp circuitry identical to V4 model
• Tone bypass feature for flatter equalization
• More pronounced distortion and slight decibel boost
• Loved by notable players like Billy Corgan
• Produced between 1978-1980

Product specs

Power

9V

Bypass

buffered bypass

Analog/Digital

analog

FAQs

What makes the Electro-Harmonix Op-Amp Big Muff Pi unique compared to other fuzz pedals?

The Op-Amp Big Muff Pi is known for its distinctive, aggressive fuzz sound, largely due to its use of operational amplifiers instead of transistors. This results in a more pronounced midrange and a sharper tone, making it a favorite for achieving thick, cutting distortion.

Is the Electro-Harmonix Op-Amp Big Muff Pi suitable for live performances?

Yes, the Op-Amp Big Muff Pi is well-suited for live performances thanks to its true bypass switching, which ensures your signal remains clear when the pedal is not engaged. Its robust build and classic fuzz tones make it a reliable choice on stage.

Can the Electro-Harmonix Op-Amp Big Muff Pi be powered by a 9V battery?

Yes, the Op-Amp Big Muff Pi can be powered using a 9V battery, which is included with the pedal. It also supports a 9V DC power supply for those who prefer using an adapter.

What type of music genres does the Electro-Harmonix Op-Amp Big Muff Pi excel in?

The Op-Amp Big Muff Pi is particularly popular in alternative rock and grunge genres, thanks to its thick, saturated fuzz tones. It's ideal for players seeking a sound reminiscent of the '90s rock era.

How does the Electro-Harmonix Op-Amp Big Muff Pi handle different guitar pickups?

The Op-Amp Big Muff Pi works well with both single-coil and humbucker pickups, delivering consistent fuzz tones. Its design allows it to maintain clarity and definition regardless of the pickup type, making it versatile for various guitar setups.

PROS

• Legendary op-amp provides loudness and lots of sustain
• Tone bypass for increased volume and flat mids
• Consistency in performance from unit to unit
• Versatile with different guitars and amplifiers
• Reissues sound nearly identical to vintage models, offering a cost-effective alternative
• Can deliver beyond traditional Big Muff sounds, excelling in doom and drone styles

CONS

• Vintage units may have issues with volume and pedalboard compatibility
• Prices for vintage models are rising, making them less accessible
• Requires careful selection from reputable sellers to avoid subpar units

Disclaimer: minor characteristics due-to-age such as light pots scratching /  hums / hisses / clicks on every 10+ years old electronic equipment for sale may occur. 

During the life span of the items, repair or restoration actions may have been made and different era / craftsmanship components may have been used.

For mentioned items are sold as-is according to the description and provider / e-commerce platform rules.

Please make sure that your shipping address is correct prior to purchasing, incorrect addresses and failing to fulfil eventual customs fees and instructions will result in additional costs.