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Coopersonic Dual-Valve Distortion Valveslapper

Coopersonic Dual-Valve Distortion Valveslapper

Find out who is using Coopersonic Valveslapper

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Page last updated Feb 13, 2026

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Description

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This is our most popular hand-built distortion pedal.

hand-built die cast aluminium housing high quality components classic tube crunch to full on distortion dual valve high voltage circuit high brightness red LED power supply included true bypass switching

“Anyone expecting the coopersonic to stay within the confines of traditional overdrive pedals will be scared witless by the paint-stripping fuzz that kicks in as the drive control advances past the 12 o’clock mark…”

“more than just another boutique overdrive, there’s a mountainous fuzztone within the coopersonic waiting to be unleashed” - Guitarist magazine 4/5

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Loud Guitars

Valveslapper

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Coopersonic Dual-Valve Distortion Valveslapper.

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The Coopersonic Valveslapper is compared to the Dirtbox for its thick OD sound, but users are curious about similar alternatives.
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User experience

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Owners appreciate the thick, rich overdrive of the Valveslapper, ideal for heavy rock tones.
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An American Pro II Jazzmaster in out of phase mode complements the Valveslapper's tone, maintaining Jazzmaster characteristics with slightly higher output.
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Features and functionality

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The Valveslapper’s dual-valve design is praised for producing a warm, tube-like distortion that stands out in live settings.
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Use cases and applications

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The Valveslapper is known for achieving super fuzzy tones similar to those used on Arctic Monkeys' "Humbug."
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Alex Turner

Guitarist

Arctic Monkeys

Verified via Photo

Clearly seen on the board (the rectangular red pedal). Both of these look different but they are the same pedal, same brand, same labels for the knobs.

Jamie Cook

Guitarist

Arctic Monkeys

Verified via Soundonsound

When recording their album Suck It and See Jamie Cook used this pedal as stated in this article : "A new sonic development for Arctic Monkeys on Suck It And See are the saturated Electro?Harmonix Big Muff?styled lead breaks that feature throughout — played mostly by Turner, but also by Jamie Cook. "It isn't a Big Muff actually,” Ford points out. "But we were trying to get that Les Paul neck-pickup sound. They've got quite a few of those weird, boutiquey fuzz pedals that give you that warm, creamy fuzz, so we used that for the solos mainly. There was one called the [Coopersonic] Valve Slapper that we used quite a lot.”