T. Jauernig Electronics is a boutique guitar effects pedal operation founded by Tim Jauernig in Wisconsin. The first pedal, the Luxury Drive, was built at home in 2004 as a simple NPN transistor–based overdrive, with an early run picked up by Dave's Guitar Shop in La Crosse, Wisconsin. Jauernig handles the design, board population, wiring, assembly, and enclosure work himself, giving the pedals a distinctly hand-built character.

The lineup centers on overdrive, distortion, boost, and modulation circuits, including the Luxury Drive, the 1-800-GAIN distortion, the Bombastortion (developed with guitarist Jeff Kollman of the Bombastic Meatbats), the Atomic FET Boy boost, and the D'Luxury Twin-Rate Tremolo. The best-known design is the Gristle King overdrive/boost, created in collaboration with guitarist Greg Koch and later produced under license by Fishman as part of Koch's signature gear.

Between 2007 and 2010, Jauernig paused his own pedal production to serve as lead designer for Peavey Electronics' Custom Shop amp division before returning to independent building in Wisconsin. The brand has a small, cult-level following in the boutique pedal community and is most often associated with Greg Koch's "gristle tone" and with players chasing hand-wired, low-volume takes on classic overdrive and distortion circuits.

T. Jauernig has 13 products cataloged on Equipboard, including Overdrive Effects Pedals, Fuzz Effects Pedals, and Delay Effects Pedals. Their gear is featured by 4 artists, with the strongest followings in Rock, Blues, and Funk / Soul. Notable users include Jeffrey James Kollman, Greg Koch, and Steve Lukather.