Reeves Amplification is a Cincinnati, Ohio-based builder of hand-wired tube amplifiers founded in 2002 by Bill Jansen. The company's designs are rooted in the military-spec Hiwatt amplifiers of the late 1960s and 1970s, and the name pays tribute to Hiwatt founder Dave Reeves. Early on, Jansen rebadged amps produced in the UK before transitioning to fully building his own amplifiers stateside, maintaining point-to-point wiring, premium transformers, and traditional circuit layouts without printed circuit boards.

The guitar amplifier lineup includes models such as the Custom 12, Custom 10HG, Custom 50 and Custom 100, the Custom 50 PS, the Custom Jimmy, the Super '78, and the Space Cowboy, covering low-wattage combos through high-headroom heads voiced in the classic British tradition. For bassists, Reeves offers the Custom 225 and the 400-watt Custom 400. The company also produces matching speaker cabinets built from 13-ply Baltic birch.

Reeves has developed a niche reputation among players seeking the clean headroom, tight low end, and punchy midrange associated with vintage Hiwatt-style circuits, particularly in genres like classic rock, stoner rock, and hard rock where the amps' loud clean platform pairs well with pedals.

Reeves Amplification has 7 products cataloged on Equipboard, including Guitar Amplifier Heads, Bass Amplifier Heads, and Guitar Amplifier Cabinets. Their gear is featured by 5 artists, with the strongest followings in Rock, Pop, and Folk, World, & Country. Notable users include Zachary Cole Smith, Scott Holiday, and Johnny Hiland.