SADUS came together as a quartet in 1984 consisting of vocalist Darren Travis, guitarist Rob Moore, bassist Steve Di Giorgio and drummer Jon Allen. Two years later the band would release their 1986 D.T.P. (Death To Posers) demo tape. These sessions led directly to the inclusion of two tracks on the 1987 Raging Death compilation album. Quick to capitalize on this achievement SADUS stuck their hands in their pockets to self finance the debut album entitled "Illusions", pulling in METAL CHURCH guitarist John Marshall as producer. The pace of progress was quickened as a deal with label Roadrunner Records was secured resulting in a further album ''Swallowed in Black'' and touring with the likes of SEPULTURA and OBITUARY. SADUS was put on ice for 1991 as Di Giorgio opted to assist DEATH for their "Human" album. With this added exposure Roadrunner re-released the "Illusions" debut retitled "Chemical Exposure" as SADUS regrouped for a summer American tour opening for Morbid Angel. Although a further album for Roadrunner, 1992's "A Vision of Misery", resulted in a full European headline tour.