by Jef | 5,0 / 5,0 | Approximate reading time: 2 Minutes
Electro Harmonix Op-Amp Big Muff reissue

Electro Harmonix Op-Amp Big Muff reissue  ·  Source: Electro Harmonix/YouTube


Electro-Harmonix has announced a reissue of the Op-Amp Big Muff Pi. No surprise here, though, as Billy Corgan of Smashing Pumpkins fame has been telling everyone about it all year…


Op-Amp Pi

The Op-Amp version of the Electro Harmonix Big Muff Pi fuzz pedal will probably always be associated with Smashing Pumpkins’ classic ’90s tone from their first albums like Gish and Siamese Dream. Many players have been seeking out the remaining original units, driving up prices on the second-hand market.

Now EM has finally reissued this unit, offering that signature Corgan buzzsaw guitar tone and its singing sustain without breaking the bank. I am a huge fan of the Op-Amp Big Muff circuit and for about 10 years now I’ve been using a Euthymia ICBM (Integrated Circuit Big Muff). Being a boutique pedal, I had to buy blind and I lucked out, as it sounds great.

If this Electro-Harmonix version had existed back then, I might have saved myself a lot of money, so I am very pleased that this particular reissue is now available at last. These classic  IC or V4 Big Muff fuzz pedals have a unique sound of their own and if you have never tried one then I reckon now you have no excuses, as this one will be available soon. It’s priced well, too, in my opinion.

Electro-Harmonix announces reissue of Op-Amp Big Muff Pi pedal

Electro-Harmonix reissues Op-Amp Big Muff Pi pedal · Source: Electro-Harmonix

Different Pi

The reissued version doesn’t look anything like the originals, with an orange colour that may be hinting at that Pumpkins connection. The new Op-Amp Big Muff Pi has controls for sustain, tone and volume, as well as a tone toggle switch to bypass the Op-Amp circuit, just like the originals. Modern-day true bypass switching is also a feature. The pedal enclosure is a lot smaller, too, making this version more pedalboard friendly than the originals.


Check out the Reverb video below where Billy Corgan tells us all about this new reissue and his impressions. Of course, if you have the money you could also buy Billy’s old Stratocaster as well and really nail that tone!

RRP – USD 80.90

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Electro Harmonix Op-Amp Big Muff reissue

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