Detail 01
Op-amp circuit
The pedal relies on op-amps rather than transistors.
Product detailSKU #1500000189965
Electro-HarmonixOp-Amp Big Muff Pi Fuzz Guitar Effects Pedal -
aggressivehigh outputwarmmetalrockhard rock
1/8
Independent shopping perspective
The Korena take
A compact reissue of the late-’70s Op-Amp Big Muff, recreating its op-amp-based fuzz circuit with true-bypass switching.
Strong match
Who this is for
- Players seeking the classic Op-Amp/IC/V4 Big Muff sound
- Guitarists who want a compact, die-cast fuzz pedal
- Fans of the Op-Amp Big Muff used on Smashing Pumpkins’ Siamese Dream
Consider the trade-offs
When to look elsewhere
- Players specifically seeking a transistor-based fuzz circuit
- Players who need four gain stages
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Three gain stages
Its recreated circuit uses three gain stages rather than four.
Detail 03
True bypass
True-bypass switching is included as a practical enhancement.
Detail 04
Compact die-cast chassis
The reissue is housed in a compact die-cast enclosure.
Final check
Know before you order
- 01This pedal uses op-amps rather than transistors.
- 02Its circuit has three gain stages rather than four.
- 03It is a reissue of the late-’70s Op-Amp Big Muff, also called the IC or V4 Big Muff.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Is this a reissue of the original Op-Amp Big Muff?
Yes. Its late-’70s Op-Amp Big Muff circuitry has been faithfully recreated.
02Is the Op-Amp Big Muff also known by other names?
Yes. It is sometimes referred to as the IC or V4 Big Muff.
03Does it use transistors?
No. The pedal relies on op-amps rather than transistors.
04Which artist is associated with this pedal?
Billy Corgan used the original Op-Amp Big Muff extensively on Smashing Pumpkins’ 1993 album Siamese Dream and commented after playing this reissue.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
4 detailsOther
- Category Source
- detail
- Tier
- new
- Korena Special
- false
- Source Id
- site51500000189965
Complete your setup
Worth comparing
1 of 12
More from Electro-Harmonix
1 of 8
