 The synthesizers controlled by the MC-4 included a Minimoog, Roland Juno 60, Sequential Circuits Prophet-5, Oberheim Xpander and a Roland Jupiter 8.For the drums the MC-4 was synced to an Akai MPC60II.Before the tour Clarke's collection of MC-4 sequencers were ‘road hardened’ by having the chips removed from their sockets and soldered directly to the circuit boards.