Soundsystem is the fifth studio album by 311, released on October 12, 1999. Soundsystem, which was certified Gold by the RIAA, was the last 311 album on Capricorn Records before the band switched to Volcano Records in 2000. Recording processes for the album began on March 11, 1999.
Rolling Stone discusses their mix of various genres, commenting "they offer their most ambitious fusion yet -- each track is a whirlwind tour of their soulful influences. Alas, the ingredients usually refuse to mix in 311's hands, resulting in disjunctions that veer between the bland and the unintentionally funny".