Ed's Mod Shop is a boutique guitar and bass effects pedal builder based in São Paulo, Brazil, operating under the tagline "Where Noise Meets Art." The shop designs original circuits and also modifies existing production pedals, with each unit hand-built and hand-painted using multiple coats of automotive-style finish. Build runs are small and lead times typically stretch to several weeks, reflecting the one-at-a-time nature of the process.

The catalog covers a range of dirt, dynamics, modulation, and utility effects, including the Ed's Fuzz (a silicon Fuzz Face-derived circuit with expanded controls aimed at germanium-like texture), the HeartBreaker overdrive, the HeartBlower bass overdrive voiced after vintage Ampeg-style grit, the Moby Dick bass fuzz, the Big Smurff Muff-style fuzz, the Pookie Fuzz, the East Q, the Cyclops Opticomp compressor, the SuperScreamer, the Triton envelope filter, the Spring Box reverb, and the ParaGlider looper/blender/preamp. The shop also takes on modification work for third-party pedals, such as converting stock choruses into dual-channel units or adjusting internal gain staging.

The brand has a following in the Brazilian guitar and bass community and has been covered by Portuguese-language gear outlets such as Pedais e Efeitos, with units frequently changing hands on the secondhand market both within Brazil and internationally.

Ed's Mod Shop has 8 products cataloged on Equipboard, including Fuzz Effects Pedals, Wah Pedals, and Bass Effects Pedals.