Date Region Description Price Seller
USAPurchased new, never used. ![Electro-Harmonix Op-Amp ...$76.00
USAThis is a listing for a used EHX Op Amp Big Muff Pi in ...$60.00
EUFor sale Electro Harmonix Muff Fuzz In very good workin...$171.88
USA With original late-70s Op-Amp Big Muffs selling for ex...$69.99
JapanThe loud and destructive Big Muff sound In response to ...$194.02
USAJust in at Tone Chasers Music is this 1970 Electro-Harm...$299.99
USAJust in at Tone Chasers Music is this 1970 Electro-Harm...$299.99
USAElectro-Harmonix Op Amp Big Muff PiThe Op Amp Big Muff ...$63.00
USAJust in at Tone Chasers Music is this Electro Harmonix ...$249.99
USAJust in at Tone Chasers Music is this Electro Harmonix ...$299.99