Double Up is the second studio album by Harlem rapper Mase, released in 1999 and distributed by Bad Boy Records. The album sold 107,000 copies in its first week, debuting at #11. Shortly after the release, Mase retired from rapping to become a Christianpastor.
The album was moderately well received by both critics and fans. Entertainment Weekly raved "Mase cannily packs his tracks with can't-miss samples...But it's his words, delivered with chilling, methodical clarity, that cut deepest." However, Mase's unwillingness to promote the album and a general lack of promotion greatly hurt sales. The album is widely considered a predictable and "by the book" follow up to his classic debut Harlem World.
There was originally a track "I'm No Killa" by Ma$e, but the song never made it to a final cut of the album due to the fact that the lyrics of a song were very aggressive and because it was a diss record towards Roc-a-Fella rapper Jay-Z (which had been produced during and as part of the recording session for his "Double Up" album), However that material was Re-recorded for the song to appear on the Bad Boy's 10th Anniversary... The Hits compilation album in 2004 as a bonus track Instead.