Here is an Atlas 7716 HO Scale Pennsylvania TrainMaster Diesel Locomotive #8706 w/DCC&Sound. This locomotive features Separately-applied door handles, Real metal springs on trucks, Realistic die-cast underframe, Five-pole skewed armature motor with dual-flywheels for optimum performance at all speeds, Directional lighting, Factory-equipped with AccuMate® couplers, Painted crew figures, Separately-installed fine scale handrails, Etched metal radiator grilles, Electronic Dual-Mode Decoder (e-DMD) (Gold Series only) that allows your locomotive to run in DCC or DC, Railroad specific details (Lighted classification lights on some models), Sound Features for Gold Series : (DCC Operation) Supports all DCC-programming modes, Flexible mapping of function keys F0 to F28, A total of six DCC function outputs are available, and Follows all NMRA DCC standards and recommended practices. Analog (DC) Operation: The LokSound Select Dual-Mode decoder allows your Atlas Gold Series locomotive to be used on DC as well as on DCC layouts. • Please note that the Atlas Quantum Engineer will NOT operate an Atlas Gold Series locomotive equipped with a LokSound Select decoder on an analog (DC) layout. However, the sound and lighting functions of the LokSound Select decoder in the Atlas Gold Series U23B locomotive can be controlled by an easy-to-use basic DCC system. Also note that on a DC-powered layout, a DCC and sound equipped locomotive (such as the Atlas Gold Series Train Master) CANNOT be consisted with another locomotive that does not also have both DCC and sound. (This statement does NOT apply to DCC-equipped locomotives operating on a DCC layout.) Sound Functionality: Over 20 sound effects are available, including engine start-up and shutdown, prime mover sounds through all eight notches, bell, air horn, air compressor, dynamic brakes and more. There are 16 user-selectable horns, 2 user-selectable bells, and 2 user-selectable synchronized brake squeals. Manual and Automatic Notching modes with the ability to change modes ”on the fly” are provided for true realism.