Jammer aka "'The Murkle Man'" (born Jahmek Power) is an English rapper and producer active in the grime scene. Jammer is a member of the grime crew Boy Better Know. Jammer also runs Lord of the Mics, a battle-rap competition well known in grime.
Jammer was a member of the East London group Nasty Crew from 2000, and released a single under his own name, "Take U Out", in 2003 before departing from the group. He signed with Big Dada Recordings and released his first full-length, Jahmanji, in May 2010. In 2014 Jammer recovered previously lost material recorded between 2004-2006, he released the tracks for free with the title he had originally intended for his debut album "Top Producer".