Frost Giant Electronics is a Texas-based builder of handmade guitar and bass effects pedals, founded by Eric Calvert. The company grew out of years spent modifying ProCo Rat pedals and studying classic fuzz circuits, and now operates through the Fuzz Worship storefront, which also sells apparel alongside the electronics line.

The brand focuses on heavy gain — fuzz, distortion, and high-gain preamp/boost circuits aimed at doom, stoner, and sludge players as well as bassists. Its catalog includes the Mountain distortion, the low-tuned Bass Mountain, the Massif, the Architect of Reality, the Athos, the Osiris, the Yama preamp/boost, the Soma Fuzz, and Big Muff-style variants branded as the Big Fuzz Triangle and Big Fuzz Civil War. Pedals are hand-assembled in small batches and typically carry a lifetime warranty.

Frost Giant Electronics has 15 products cataloged on Equipboard, including Fuzz Effects Pedals, Boost Effects Pedals, and Overdrive Effects Pedals. Their gear is featured by 3 artists, with the strongest followings in Rock and Metal. Notable users include Chris Couzens, Dave Majury, and TJ Maynard.