Simon the Magpie is a Swedish builder and YouTube personality who designs experimental guitar pedals, synthesizers, and circuit-bent instruments under the Magpie Pedals (also branded Magpie Audio Devices) name. The operation began in spring 2021 as a collaboration between Simon and his friend Horseman, who helped with breadboarding and schematics, and grew into a full-time pedal company in 2022. Pedals are designed and assembled in Sweden in small batches and shipped globally.

The brand is known for noisy, lo-fi, and unconventional effects rather than traditional drive or modulation tools. Notable releases include the Bubbles, a lo-fi delay built around a five-step sequencer; Patterns, a fuzz with a per-step stuttering sequencer; Stutterphone, a silence looper that uses a vintage rotary phone dial as its interface; the Feedback Organ, which turns microphone feedback into a playable instrument; and earlier experimental units such as Fruits and Moist. Visually the pedals lean into a colorful, decorative aesthetic with hand-painted flowers and stars, reflecting the same DIY, circuit-bending sensibility Simon is known for on YouTube.

Simon the Magpie has 5 products cataloged on Equipboard, including Dynamic Microphones, Drum Machines, and Modular Synthesizers. Their gear is featured by 1 artist, with the strongest followings in Electronic and Pop. Notable users include Andrew Huang.