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Electro Harmonix Op Amp Big Muff Pi | Fuzz / Distortion / Sustainer - Guitar Warehouse
SKU OPAMPBM

Electro Harmonix Op Amp Big Muff Pi | Fuzz / Distortion / Sustainer

Sold out
£85.00 - £85.00
£85.00
£85.00 - £85.00
£85.00
Availability:
Out of stock

PART EXCHANGE

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With original late-70s Op-Amp Big Muffs selling for exorbitant prices, Mike Matthews decided to take the power to the people and reissue the classic pedal at a price that players could afford! The circuitry of the new EHX Op-Amp Big Muff Pi —sometimes also referred to as the IC or V4 Big Muff— has been faithfully re-created while several practical enhancements have been added including a compact, die-cast chassis and true bypass switching.

“The Op-Amp Big Muff was popularized by the brilliant Billy Corgan who first used it on the Smashing Pumpkins’ epic 1993 album Siamese Dream. After he was videotaped playing and talking about the reissue, Billy stated: ‘The magic’s still in the box, I can still get what I’m looking for!’” – Mike Matthews

The pedal relies on op-amps rather than transistors and three gain stages rather than four, to create its signature sound. It’s a sound that’s been described by noted Big Muff collector and historian, Kit Rae, as: “a huge, crushing Big Muff sound with more crunch… great for grungy, wall-of-sound distortion, heavy rhythm playing and heavy leads.”

  • A faithful reissue of the original classic circa 1978
  • Iconic sound and vibe that’s coveted by guitarists
  • Controls for Tone, Sustain and Volume, plus a Tone Bypass switch
  • True bypass switching for maximum signal integrity in bypass mode
  • Rugged, compact, die-cast package… pedalboard friendly
  • 9V battery included

      Shipping Pricing Guide

      We expertly pack all of our items.

      Standard Delivery for Small Parts & Accessories + Vinyl Records (2-3 Day) - £3.50

      Standard Delivery for Small/Medium Items (3-5 Working Day) - £4.99

      Standard Guitar & Amp Delivery (3-5 Working Day) - £9.99

      Express Small/Medium Item Delivery (Next Working Day) - £9.99

      Express Instrument & Amp Delivery (Next Working Day) - £14.99

      Setup & Ship Service - £25.00 Professional setup service worth over £50! Lead times typically +2 days for this service.

      There will be a small surcharge for parts of Scottish Highlands/Isles & Ireland, we will be in touch after you place your order. Or you ask us for a quote prior to ordering.

      Dispatch Times

      We aim to dispatch all orders SAME DAY WORKING DAY, if you place your order before 1PM. If your guitar requires setup work before shipping, please allow 1-2 days lead time.

      International Shipping

      Europe - Please contact us for a quote

      USA Guitar Shipping £150-195 via UPS - (Please contact us for a quote)
      USA Pedal Shipping £45 via UPS - (Please contact us for a quote)

      Rest of World - Please contact us for a quote

      Online Orders – 14-Day Returns (Distance Selling Regulations)
      Customers who make a purchase online or via distance selling are entitled to return an item within 14 days of receipt, in accordance with the Consumer Contracts Regulations. Items must be in unused condition and returned with all original packaging and documentation.

      • Refunds will be issued to the original payment method once the item has been inspected and confirmed to be in resalable condition.
      • Return shipping is the responsibility of the customer unless the item is faulty or supplied in error.

      In-Store Purchases
      Items purchased in-store are not eligible for a refund. However, we do offer exchange or a store credit (gift card) for in-store purchases returned within 14 days, provided they are in their original condition with proof of purchase.

      Exclusions
      Please note that custom orders, modified items, B-stock, clearance items, and goods obtained through part exchange are non-refundable, unless faulty.

      Partial Refunds
      There are certain situations where only partial refunds may be granted, at our discretion. These include, but are not limited to:

      • Guitars returned with protective plastic film removed from pickguards or pickups.
      • Items showing signs of use or handling.
      • Missing or damaged original packaging, tags, or accessories.

      All returns are inspected upon receipt. If a return does not meet the conditions above, we reserve the right to refuse it or issue a partial refund.

      Founded in 2017 as a physical store, we pivoted to e-commerce during the pandemic. Serving customers throughout the UK, we maintain our traditional storefront while thriving in the online space. A guitar store created by and for guitar enthusiasts.