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Electro-Harmonix J Mascis Signature Ram's Head Big Muff Fuzz Pedal , $105.00 - Add to Cart Skip to Product Information

Electro-Harmonix J Mascis Signature Ram's Head Big Muff Fuzz Pedal

J Mascis Signature Big Muff with Volume, Tone, and Sustain Controls
Electro-Harmonix J Mascis Signature Ram's Head Big Muff Fuzz Pedal
Electro-Harmonix J Mascis Signature Ram's Head Big Muff Fuzz Pedal
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Electro-Harmonix J Mascis Signature Ram's Head Big Muff Fuzz Pedal
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The Signature Muff of an Indie-rock Icon

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Our Product Research Team

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For most players, an “always-on” pedal is a subtle boost or a pinch of reverb. However, most players are not J Mascis of Dinosaur Jr., an indie-rock guitar hero and a man who proudly proclaims “the Muff is always on.” The Electro-Harmonix J Mascis Signature Ram’s Head Big Muff is a replication of one of his favorite Muffs, the 1973 V2 Violet Ram’s Head Big Muff Pi — a renowned fuzz at Sweetwater for its ability to remain clear, present, and defined on even the most crushing settings. Dinosaur Jr.’s tonal foundation owes much to this mighty pedal, and it’s been the sonic core of J’s laid-back 6-string virtuosity across the band’s entire output. If you’re looking to capture the sound that defined the "Freak Scene" of ’80s and ’90s indie rock, string up the ol’ Jazzmaster and kick on the Electro-Harmonix J Mascis Signature Ram’s Head Big Muff!

Based on a Big Muff classic

On Dinosaur Jr.’s first album, 1985’s Dinosaur, the Big Muff played such an integral role that J Mascis has it listed as an instrument in the album credits — not much of a surprise, considering that the indie-rock guitar icon can recount but a single show in his career played without some sort of Muff. Mascis is famous for playing all types of variations on this classic fuzzbox, but one of his favorites is the 1973 V2 Violet Ram’s Head model. It’s an exceptionally clear and cutting style of fuzz — also favored by a certain guitarist whose name ends with “Gilmour” — that provides nearly endless sustain and a thick, powerful sound that’s ideal when playing in a 3-piece like Dinosaur Jr. The J Mascis Signature Ram’s Head Big Muff is based on that very circuit, providing the iconic vintage-style sound of a Big Muff classic, but with all the benefits of modern construction.

Why is it called the “Ram’s Head”?

There have been a ton of Big Muffs over the years, and some of them have acquired nicknames among fuzz enthusiasts. For example, the Triangle Big Muff refers to the first production Big Muff and takes its name from the knob layout of the original. So why is this called the “Ram’s Head Big Muff”? Well, it comes down to that little logo in the corner. It can be debated how much like a ram it looks (or what it actually is, for that matter), but the curly headed creature in the corner is indeed the namesake for this version of the Big Muff.

Electro-Harmonix J Mascis Signature Ram’s Head Big Muff Effects Pedal Features:

  • Signature fuzz tone of Big Muff connoisseur J Mascis of Dinosaur Jr.
  • Based on the 1973 Electro-Harmonix V2 Violet Ram’s Head Big Muff Pi
  • Provides a clear, powerful tone with incredible sustain
  • Durable die-cast chassis with a graphic of J’s signature
  • True bypass construction so keep your tone uncolored when the pedal is disengaged

Warranty Info

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Offer applies only to single-receipt qualifying purchases. Select manufacturers may require that only the manufacturer’s products qualify towards the minimum purchase amount needed to be eligible for promotional financing. Otherwise, an invoice that meets the minimum purchase amount and contains at least one qualifying manufacturer product is eligible for promotional financing. No interest will be charged on promo purchase balance, and equal monthly payments are required on promo purchase until it is paid in full. The payments equal the amount financed divided by the number of months in the promo period, rounded up to the next whole dollar. These payments may be higher than the payments that would be required if this purchase was a non-promo purchase. During the last month(s) of the promo period the required monthly payment may be reduced due to the prior months’ rounding. Regular account terms apply to non-promo purchases. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo balance if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo balance from the purchase date. The required minimum monthly payments may or may not pay off the promo balance before the end of the promo period, depending on purchase amount, promo length and payment allocation. Regular account terms apply to non-promo purchases and, after promo period ends, to the promo balance. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

The estimated required monthly payment shown which excludes taxes and delivery equals the amount financed divided by the number of months in the promo period, rounded up to the next cent. During the last month(s) of the promo period the required monthly payment may be reduced due to this rounding. These payments apply only with the financing offer shown. If you make these payments by the due date each month, you should pay off this amount financed within the promo period, if it is the only balance you are paying off. If you have other balances on your account, this payment will be added to any other minimum monthly payments.

Applies only to select items from this manufacturer. Ask your Sweetwater Sales Engineer for more details.