Diffuser was an alternative rock band from Long Island, NY. Formed in 1994, the band was originally called Flu Thirteen. After six years & a few line up changes, Tomas Costanza (Vocals/Guitar), Anthony Cangelosi (Guitar), Lawrence Sullivan (Bass) & Billy Alemaghides (Drums) signed a major label record deal and changed their name to Diffuser.

Lawrence & Billy left the band in 2003 and were replaced by Peter Schojan & Dan Leo on bass and drums respectively. In April 2004 Diffuser was dropped by their record label and they disbanded shortly after. Diffuser reunited in 2007 to record a new album. Guitarist, Keith Hille was added to the line up making the band a five-piece. In 2008, following the release of the album, Diffuser once again disbanded.

Final Lineup
Tomas Costanza: Vocals/Guitar
Anthony Cangelosi: Guitar
Peter Schojan: Bass
Dan Leo: Drums
Keith Hille: Guitar

Former Members
Lawrence Sullivan: Bass (1994–2003)
Billy Alemaghides: Drums (1994–1995; 2000–2003)
Brian Fawcett: Guitar (Flu Thirteen) (1994–1998)
Chris Sanchez: Drums (1998–2000)