Founded by Bruce Egnater in the Detroit, Michigan area, Egnater is an American boutique guitar amplifier manufacturer with roots stretching back to 1975, when Bruce opened a guitar and amplifier repair shop after attending the University of Detroit Engineering School. The company formally became Egnater Custom Amplification in 1980 and has since earned a reputation for innovative tube amplifier designs that prioritize tonal versatility. Bruce Egnater's early custom work attracted high-profile clients including Steve Vai, Stevie Ray Vaughan, Dimebag Darrell, and Nuno Bettencourt, establishing the brand's credibility in the professional music world.

Egnater is best known for its modular amplifier architecture, pioneered in the MOD50 and MOD100 heads and the M4 preamplifier, which allow players to swap interchangeable tube preamp modules for radically different voicings. This modular concept also formed the basis of a collaboration with Randall Amplifiers on the Randall MTS series. The company's production lineup includes the Tweaker series, which uses mini-toggle switches to shift between American, British, and AC30-style voicings; the Rebel series, featuring a tube mix control that blends 6V6 and EL84 power tubes for a wide tonal range; and higher-powered models like the Renegade, Tourmaster, Vengeance, and Armageddon. Egnater also produces effects pedals — the Goldsmith overdrive/boost, Silversmith, and Black Metal distortion — as well as the hand-wired E3 Boutique series of amplifiers and matching speaker cabinets.

Egnater has 43 products cataloged on Equipboard, including Guitar Amplifier Heads, Guitar Amplifier Cabinets, and Combo Guitar Amplifiers. Their gear is featured by 34 artists, with the strongest followings in Rock, Metal, and Electronic. Notable users include Jesse Johnson, Kevin 'Noodles' Wasserman, and Ty Tabor. Most Egnater products fall in the mid-tier range — professional-grade without flagship pricing.