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MXR drops psychedelic Brown Acid Fuzz

MXR Brown Acid Fuzz pedal
(Image credit: Jim Dunlop)

Amid surprisingly little fanfare, MXR has announced the Custom Shop Brown Acid Fuzz, a silicon-based fuzz pedal based on “a classic 1970s UK fuzz circuit”.

Without a demo video to go on, we’d bet this based on Colorsound’s mid-’70s Supa Tonebender, which delivered Muff-like fuzz with additional low-end.

That should make this one a great choice for the guitar and bass pedalboards of doom, stoner and classic metal players, with a no-nonsense control array of output, tone and fuzz.

As Jim Dunlop says (opens in new tab), “Whether you want to ride droning power chord currents across the universe or summon burly grooves at an ancient altar, this pedal has all you need for your musical invocations.” Well, quite.

The Brown Acid is available now for $149 for a limited time only.

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Mike is Editor-in-Chief of, in addition to being an offset fiend and recovering pedal addict. He has a master's degree in journalism, and has spent the past decade writing and editing for guitar publications including MusicRadar (opens in new tab), Total Guitar and Guitarist, as well as the best part of 20 years performing in bands of variable genre (and quality). In his free time, you'll find him making progressive instrumental rock under the nom de plume Maebe (opens in new tab).