What was Jam Master Jay's Net Worth? Jam Master Jay was an American musician and DJ who had a net worth of -$1 million at the time of his death. Jam Master Jay was best known as a member of the hip hop group Run-DMC. In the 80s, the group helped bring hip hop into the mainstream with such hit albums as the self-titled "Run-D.M.C.," "King of Rock," and "Raising Hell." Jam Master Jay died in 200...