999999999 (pronounced “Nine Times Nine”) is an Italian hard techno duo formed in 2016, consisting of Carlo B. and Giovanni C. Known for their raw, high-energy sound and improvisational live performances, they have become a formidable presence in the global techno scene.​

999999999's music is characterized by a fusion of acid techno, industrial textures, and relentless rhythms. Their live sets are exclusively hardware-based, emphasizing spontaneity and intensity. This approach has earned them acclaim for delivering immersive and unpredictable performances that resonate deeply with audiences.