Dillinja, (also known as Capone, Cybotron, D-Type and Original Master), (real name Karl Francis) is a jungle and drum and bass DJ and producer from Brixton in South London. Arguably the most prolific producer on the scene, he set up Valve Recordings in partnership with long-term collaborator Lemon D, with whom he also designed and built the Valve Sound System, purported to be the most bass-heavy system in the world (contrary to rumour it is not the loudest). It is the only sound system designed and built for playing drum and bass.