Happy Nerding is a boutique Eurorack module manufacturer founded by Ukrainian designer Igor Boboshko. The company specializes in compact, space-efficient modules aimed at modular synthesizer builders, with a focus on clean signal paths, practical utility, and dense feature sets inside small HP footprints.

Its catalog spans mixers, VCAs, filters, oscillators, and effects processors. The brand is best known for the FX AID family of multi-effect modules — including the 4HP FX AID, the FX AID XL, and the FX AID Pro with its OLED screen and 200 onboard algorithms — which receive ongoing firmware updates that add new effects and drum-voice emulations. Other frequently cited modules include the 3xMIA mixer/attenuator, the MMM VCF filter, the FM AID, and the Super Sawtor sawtooth animator.

Happy Nerding operates as a small, developer-driven outfit, and Igor is known in the modular community for hands-on product support and frequent algorithm additions to existing hardware.

Happy Nerding has 4 products cataloged on Equipboard, including Modular Synthesizers. Their gear is featured by 3 artists, with the strongest followings in Electronic, Pop, and Rock. Notable users include Andrew Huang, Joey Walker, and Overmono.