String Theory EFX updates Tevatron Fuzz and KE/64 Overdrive pedals

Illinois pedal co String Theory EFX has unveiled new versions of its Tevatron Fuzz and KE/64 Overdrive pedals.

The new designs promise to be more pedalboard-friendly, reduce production time and lower the cost, while retaining the same tones.

Printed circuitboards are now onboard, while the powder-coated enclosures boast UV-printed graphics.

The KE/64’s JFET-based circuit is inspired by “a cranked-up little green British combo amplifier”, and aims to keep the sound of your guitar and amp intact while adding “something special” through its amp-like overdrive.

The Tevatron Fuzz, meanwhile, pairs an NOS germanium transistor with an op amp IC chip, which should deliver a host of fuzz textures, from overdrive up to high-gain spitty fuzz, tweaked via bias, gain and fuzz controls.

Both pedals are still hand-wired, while the Tevatron Fuzz is available with a hand-selected NOS germanium transistor or silicon transistor.

The Tevatron Fuzz ($180) and KE/64 Overdrive ($165) are available now from String Theory EFX.

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Michael Astley-Brown

Mike has been Editor-in-Chief of GuitarWorld.com since 2019, and an offset fiend and recovering pedal addict for far longer. He has a master's degree in journalism from Cardiff University, and 15 years' experience writing and editing for guitar publications including MusicRadar, Total Guitar and Guitarist, as well as 20 years of recording and live experience in original and function bands. During his career, he has interviewed the likes of John Frusciante, Chris Cornell, Tom Morello, Matt Bellamy, Kirk Hammett, Jerry Cantrell, Joe Satriani, Tom DeLonge, Radiohead's Ed O'Brien, Polyphia, Tosin Abasi, Yvette Young and many more. His writing also appears in the The Cambridge Companion to the Electric Guitar. In his free time, you'll find him making progressive instrumental rock as Maebe.