Ultraschall (German: Ultrasound, German: [ˈʊltʁaʃal]) was a nightclub in Munich, Germany from 1994 to 2003. The techno club belonged, besides the Tresor and E-Werk in Berlin, the Dorian Gray and Omen in Frankfurt, and the Munich-based clubs KW – Das Heizkraftwerk, Natraj Temple and Millennium, to the most renowned clubs of Germany's 1990s techno culture. According to FazeMag, Ultraschall was "for many techno fans the most authentic techno club alongside the Tresor".