Kikusui Electronics Corporation is a Japanese precision electronics manufacturer founded in 1951 and headquartered in Yokohama, Kanagawa. The company's core business is industrial test and measurement gear — DC and AC programmable power supplies, electronic loads, oscilloscopes, and EMC and safety test equipment — sold to engineering and automotive customers worldwide. Although the company does not market itself to musicians, several of its products have crossed over into pro audio and guitar circles.

Kikusui's PCR-series programmable AC power sources, including models such as the PCR500MA, PCR-500L, and PCR1000M, are used by guitar techs and tube-amp enthusiasts as high-quality variacs to feed amplifiers stable, adjustable mains voltage. The ability to dial in a precise voltage at the wall is valued for managing the running conditions of vintage tube amps and for working safely on amps designed for different regional power standards.

In 2020, Kikusui acquired the trademarks and design assets of Bixonic Inc., the original maker of the Expandora distortion pedal, and relaunched Bixonic as an audio business unit inside Kikusui. The first product of this revived line, released in 2022, is the Axentrix A1 — a digital multi-distortion pedal built around Kikusui's signal-processing know-how, with multi-function controls, three preset slots, and selectable buffered or true bypass.

Kikusui has 3 products cataloged on Equipboard, including Effects Pedal Accessories and Power Conditioners. Their gear is featured by 4 artists, with the strongest followings in Rock, Folk, World, & Country, and Pop. Notable users include Dan Auerbach, Angus Young, and Keith Urban.