KO Amps is a boutique builder based in North Bay, Ontario, Canada, specializing in handwired guitar amplifiers and effects pedals. The company is known for its line of compact stompboxes housed in mini 1590A enclosures, with offerings that include the KOi Overdrive (a d-style overdrive variant with mosfet clipping and a voice control), the D+ Distortion (based on the MXR Distortion+ / DOD 250 circuit), the Signature Overdrive, the Tune Mender MKIII, and a range of fuzz and amp-style drive units.

Products are sold direct through the KO Amps website and Reverb shop, with both stock items and made-to-order builds available in customizable finishes. The brand sits in the small-batch, hand-built pedal niche, with a focus on classic drive, distortion, and fuzz circuits reworked into space-saving formats.

KO Amps has 2 products cataloged on Equipboard, including Overdrive Effects Pedals.