Revox - is a Swiss company that stands for high-quality audio products since 1948. Founded by Willi Studer, Revox started manufacturing tape machines and expanded their portfolio with amplifiers, tuners, turntables, tape recorders and loudspeakers over the years. In 2025, the Revox Group and the American company National Audio Company Inc. join forces to produce audio cassettes, and a production line is installed at the Revox factory in Villingen, Germany.