IdiotBox Effects is a boutique guitar and bass effects pedal maker based in Texas, founded and operated by Matt (often known online as Atarimatt), who designs the circuits, graphics, and screen printing for every pedal. The operation has run full time under the IdiotBox name since 2011, focusing on hand-built, small-batch pedals with an intentionally oddball, lo-fi aesthetic.

The lineup spans fuzz, distortion, overdrive, delay, chorus, phaser, and noise/stutter effects, with models like the Ron Fucking Swanson Super Fuzz, Monster Fuzz, Static Fuzz, 3D Triple Delay, Dark Waves Echo Chorus, Whataphaser, and bass-oriented pedals such as the Blower Box Bass Distortion and Black Fortress. Names and graphics frequently lean on pop culture references, and the company regularly offers limited runs, pre-orders, and B-stock units alongside its standard catalog.

IdiotBox has built a reputation in the DIY and underground pedal community for unusual, character-driven voicings rather than polished clones, and its pedals are distributed through the brand's own storefront as well as specialty retailers like Coast Sonic, Guitar Center, and Reverb.

Idiotbox Effects has 23 products cataloged on Equipboard, including Fuzz Effects Pedals, Overdrive Effects Pedals, and Tremolo Effects Pedals. Their gear is featured by 9 artists, with the strongest followings in Rock, Metal, and Electronic. Notable users include Christian Lembach, Stephen O'Malley, and Jeff Matz. Most Idiotbox Effects products fall in the mid-tier range — professional-grade without flagship pricing.