Spånga, Sweden
About this listing
Electro-Harmonix Op-Amp Big Muff Pi Reissue fuzz, distortion, and sustainer pedal in black, orange, and silver finish.I have not tested freshly myself before listing, it is sold as photographed and described.The Op-Amp Big Muff Pi is Electro-Harmonix’s compact reissue of the late-1970s Big Muff circuit commonly referred to as the IC, V4, or Op-Amp Big Muff. Unlike the traditional transistor-based Big Muff circuit, this version uses operational amplifiers and three gain stages to produce its distinctive aggressive, compressed, and sustaining fuzz sound. This version of the circuit is particularly associated with heavy alternative rock, grunge, thick rhythm sounds, sustained leads, and layered “wall of sound” guitar tones. Electro-Harmonix specifically links the original circuit with Billy Corgan and the Smashing Pumpkins’ Siamese Dream sound. The pedal has controls for Volume, Tone, and Sustain. Volume controls the output level, Sustain adjusts the amount of distortion and sustain, and Tone ranges from bass-heavy sounds to brighter, more treble-focused settings.The additional Tone switch removes the Tone control from the signal path for a more open, full-range sound. Electro-Harmonix improved this function over the original vintage pedal so that the output level remains approximately consistent when switching the tone circuit in or out. The pedal uses true-bypass switching and is housed in a compact die-cast metal enclosure. It can be powered by a standard 9V battery or a compatible centre-negative 9V DC adapter.The pedal is in very good cosmetic condition overall. The front graphics, knobs, toggle switch, LED lens, footswitch, input and output sockets, power socket, baseplate, screws, and rubber feet all appear intact.There are visible light surface marks, dust marks, small scratches, and darker rubbing or handling marks on parts of the silver enclosure, particularly on the sides. These appear consistent with storage and handling rather than pedalboard use. There is no Velcro attached to the underside.The original Electro-Harmonix box and the paperwork shown in the photographs are included. The box has visible storage wear, surface scratches, edge and corner wear, creasing, and a large old label or tape mark across the front.ConditionVery Good used conditionNot freshly tested before listingFunctionality can be confirmed before shipping if requiredNo known pedalboard useNo Velcro attachedSilver, black, and orange enclosure presents well overallLight scratches, dust, rubbing marks, and storage / handling signs visibleDarker cosmetic marks visible on parts of the side panelsFront graphics remain clear and intactVolume, Tone, and Sustain knobs appear intactTone on / off toggle switch appears intactLED lens and metal footswitch appear intactInput, output, and power sockets appear intactBaseplate, four screws, and four rubber feet are presentOriginal box has scratches, creases, edge wear, corner wear, and label / tape residueNo obvious broken or missing pedal components visibleSpecificationsBrand: Electro-HarmonixModel: Op-Amp Big Muff Pi ReissueAlternative Names: IC Big Muff, V4 Big Muff, Op-Amp Big MuffEffect Type: Analog fuzz / distortion / sustainerFinish: Silver enclosure with black and orange graphicsOriginal Circuit Era: Circa 1978Reissue Release Year: 2017Reverb Model Years: 2017–2021Pedal Format: Standard compact pedalCircuit: Analog op-amp-based Big Muff circuitGain Structure: Three gain stagesAudio: MonoControls: Volume, Tone, SustainVolume Control: Adjusts the output levelTone Control: Ranges from bass-heavy to treble-focused soundsSustain Control: Adjusts the amount of distortion, fuzz, and sustainTone Switch: Removes the Tone control from the circuitTone-Bypass Level: Designed to maintain a similar level in both switch positionsMain Character: Aggressive, compressed fuzz with heavy sustain and pronounced crunchSuggested Styles: Alternative rock, grunge, heavy rock, shoegaze, sustained lead tones, and layered rhythm soundsBypass: True bypassIndicator: Effect-status LEDFootswitch: Effect on / bypassInput: 1/4" mono input jackInput Impedance: 55 kΩOutput: 1/4" mono output jack labelled AMPPower: 9V battery or compatible 9V DC adapterPower Polarity: Centre negativeRecommended Adapter: Electro-Harmonix EHX9.6DC-200 or equivalentMinimum Adapter Capacity: At least 25 mACurrent Draw: Approximately 5 mADimensions: Approximately 70 × 115 × 54 mmConstruction: Compact die-cast metal enclosureIncludedElectro-Harmonix Op-Amp Big Muff Pi Reissue pedalOriginal Electro-Harmonix retail boxOriginal paperwork shown in the photographsOriginal internal packaging shown in the photographsNo external power supply includedNo 9V battery includedShippingThe pedal will be carefully packed in protective packing material inside an outer shipping box included in the item or shipping price.Shipping will be via tracked courier service depending on destination, price, parcel size, and insurance availability. Tracking will be provided after dispatch.International buyers are responsible for all import duties, VAT, customs fees, tariffs, brokerage / handling fees, and any other local taxes or charges required by the destination country. These costs are not included in the item price or shipping price.Shipping outside Europe may be possible by prior agreement. Please contact me before purchasing for an exact insured courier quote.
Pricekr797.51
+ kr115.58 Shipping





