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This is a clone of the op-amp Big Muff PI. Only made in 1978 it was the only Big Muff to use a an op-amp IC in place of the usual transistors used in all other Big Muffs. The op-amp Big Muff was used by the Smashing Pumpkins and Billy Corgan Siamese Dream. 
This has a sound similar but distinct from the classic Big Muff circuit. The controls are the same as the classic Big Muff: Volume, Tone, and Sustain (labeled gain on this pedal.) This version also has tone Bypass switch that removes the tone stack from the circuit entirely. This option adds a raw edge to the sound. 

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Listed3 years ago
ConditionExcellent (Used)
Excellent items are almost entirely free from blemishes and other visual defects and have been played or used with the utmost care.Learn more
  • ICBM (EHX Op-amp Big Muff clone)
  • Purple Sparkle
  • 2019


San Francisco, CA, United States
Joined Reverb:2013

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