Mattoverse Electronics is a Wisconsin-based builder of handmade effects pedals, noise devices, and small electronic instruments founded by Matt Olson. The company's output sits at the crossroads of guitar effects and experimental synthesis, with many of its circuits designed to respond well to synths, drum machines, and other line-level sources in addition to guitar and bass.

The catalog leans toward idiosyncratic takes on familiar effects alongside more exploratory tools. Notable releases include the AirTrash lo-fi distortion, the TremStortion (combining tremolo and distortion), the Inflection Point modulation pedal, the Bad Passenger fuzz, and the Swell Echoes delay. Mattoverse has also experimented with unconventional power sources on pedals such as the Solar Sound Drive and the FloraVolt, which can be powered by fruits and vegetables.

Pedals are typically built in small runs, often featuring engraved acrylic faceplates and visible LEDs, giving the line a distinct handmade aesthetic. The brand is associated with the "make noise not war" tagline and has a presence among experimental guitarists, synth players, and noise musicians who favor boutique, hands-on electronics.

Mattoverse Electronics has 9 products cataloged on Equipboard, including Delay Effects Pedals, Tremolo Effects Pedals, and Fuzz Effects Pedals. Their gear is featured by 3 artists, with the strongest followings in Rock, Blues, and Folk, World, & Country. Notable users include Wata, Steve Onotera, and samuraiguitarist.