Michael Klein Audio Design is a boutique guitar effects pedal builder based in Kansas City, Missouri. The company is known for hand-built analog overdrive, distortion, and preamp pedals aimed largely at high-gain and metal players, with a focus on tone-sculpting and articulate response at heavy gain levels.

The shop's catalog includes the Dybbuk overdrive, the Spire overdrive, the Evil Chunk analog high-gain preamp, the Oni dual overdrive/distortion, the Flower Box preamp, and the Lonely Ghost. Several of its releases have been signature collaborations with metal guitarists — most notably the Dybbuk, developed with Sammy Duet of Goatwhore and Acid Bath, and the Husk distortion built with Mike Thompson of Withered.

The brand has carved out a niche in the boutique extreme-metal pedal world, with its products carried by retailers such as Safe Haven Music, Manchester Music Mill, and Reverb sellers, alongside listings at larger outlets like Guitar Center.

Michael Klein Audio has 7 products cataloged on Equipboard, including Overdrive Effects Pedals, Multi Effects Pedals, and Distortion Effects Pedals. Their gear is featured by 5 artists, with the strongest followings in Rock and Metal. Notable users include Sammy Duet, Taylor Young, and Gary Holt.