Enter the Behringer 903A RANDOM SIGNAL GENERATOR Module, a vintage-sounding noise generator from the Ô70s. An authentic reproduction of the circuitry from the ÒModular 55Ó series used by the worldÕs most famous pop, rock and jazz musicians. Now, musicians can build their very own, unique, synthesizer that can fit in a standard Eurorack case for a very affordable price. Mix and match specific modules to create your personal, unique synth to complement the music you play or go all out and fill a room, from floor to ceiling, with modules thatÕll fulfill any synth geekÕs wildest dream.