Gehirn Enterprises is a small, founder-run effects and synthesizer module builder based in Hobart, Tasmania, Australia, operated by Brendan Pearce. The company designs guitar, bass, and synth pedals along with Eurorack modules aimed squarely at the heavier and more abrasive ends of the musical spectrum, including harsh noise, drone, doom, power electronics, and extreme metal.

The lineup includes pedals such as the NoisWasp, Binary Eruptor, Zerstorer, DoomedLife, DoomLord, and the Deep Vibe vibrato/modulation pedal, alongside Eurorack utilities and noise/drone-oriented modules. Builds emphasize ruggedness and an unapologetically aggressive sonic character rather than polished, mainstream tones, with a hand-built ethos and limited production runs that have given the brand a cult following among noise and extreme music players.

Gehirn Enterprises has 6 products cataloged on Equipboard, including Fuzz Effects Pedals, Multi Effects Pedals, and Guitar Synth Pedals.