Greedtone is a boutique guitar amplification and effects builder based in West Seattle, Washington. Founded by audio engineer Greg "Greedy" Williamson — whose prior credits include work as a sound technician for bands such as Foo Fighters and Sunny Day Real Estate — the company hand-builds each unit in small batches out of the Bionic Ear shop. The operation is closely tied to Williamson's related audio repair and custom-mod business.

The product line centers on overdrive and distortion pedals designed to add gain while preserving the underlying character of the guitar signal. Core offerings include the original Greedtone Overdrive, the Overdrive 2, and the Greedtone Classic, which uses silver mica capacitors and built-in noise reduction circuitry. Greedtone also produces tube amplifiers and matching speaker cabinets, such as the JHI-100, a 100-watt head paired with a 2x12 cab.

The brand has a niche reputation among tone-focused players and has been used by musicians associated with Pearl Jam, Minus the Bear, and Murder By Death.

Greedtone has 7 products cataloged on Equipboard, including Overdrive Effects Pedals, Fuzz Effects Pedals, and Guitar Amplifier Heads. Their gear is featured by 5 artists, with the strongest followings in Rock, Electronic, and Pop. Notable users include Josh Homme, Thomas Erak, and Jeremy Enigk.