Allows DC users of Atlas Master Gold Series locomotives to take control of all the QSI Quantum System sound features. In addition to horn and bell sounds users can access different engine settings and effects such as flange squeal, dynamic brakes, coupler sounds, blower/fans and reverse lights, ditch/warning light. Also allows DC users to control advanced features including programming options, verbal scale speed readout and locomotive braking, shut-down and start-up. Easy setup requires no special equipment. Simply wire controller between a standard DC power pack and the track. Not suitable for older Quantum-equipped engines that do not have Quantum Analog Remote Control technology.