He worked with such artists as Elvis Presley, Duke Ellington, Johnny Cash, Henry Mancini, and Mahalia Jackson.
His association with Mancini earned him a Grammy Award for engineering the soundtrack of the 1963 film Charade.
He gained employment with NBC and attended night school at National Electronics in Los Angeles.
In the early 1970s, Malloy produced Sammi Smith's Grammy-winning recording of "Help Me Make It Through the Night" and started his own company, called DebDave Music, named after his two children, Debra and David.
[2] Aside from his Grammy win, Malloy was nominated for five more Grammys for his work on Elvis Presley's How Great Thou Art, Eddy Arnold's The Last Word in Lonesome, The Latin Sound of Henry Mancini, The Pink Panther (1963) soundtrack, and "The Addams Family Theme".