Earthbound Audio is a boutique effects pedal builder based in Lambertville, New Jersey, operated by a builder named Mark. The brand focuses on heavy, aggressive fuzz and distortion circuits aimed at doom, sludge, stoner and noise players, with each pedal hand-assembled in small batches.

The lineup centers on the SuperCollider, a Big Muff–derived four-transistor fuzz/distortion with Tone, Mids, Mass, Level and Gain Structure controls plus a gain toggle, which has developed a following among bassists and down-tuned guitarists for its low-end weight and bite. Other releases include the Throat Locust, a Boss HM-2-inspired distortion, alongside the Iron Pig distortion, the Pale Mare fuzz and the Centurion fuzz.

Earthbound Audio sells direct through its own Big Cartel storefront, and the pedals circulate on the secondary market via Reverb. The brand is regularly covered by pedal-focused outlets such as Guitar Pedal X and Pedal of the Day, and is a frequent topic of discussion on communities like TalkBass where its heavier voicings have built its reputation.

Earthbound Audio has 7 products cataloged on Equipboard, including Fuzz Effects Pedals, Overdrive Effects Pedals, and Distortion Effects Pedals. Their gear is featured by 3 artists, with the strongest followings in Rock. Notable users include Ian D'Sa, Greg Ahee, and marissa paternoster.