Echo Valley Express Digital Starter Set ? Digital Command Control with Sound ? HO Scale. A whistle echoes through the walls of a deep valley as you hear the unmistakable chuffing of a classic steam locomotive approaching. The Echo Valley Express is steaming ahead with carloads of coal to fuel America?s hungry furnaces. This set features a DCC sound-equipped Alco 2-6-0 with a steam sound package that includes authentic prototypical chuff, short and long whistles, bell, air compressor, and blower?all in polyphonic 16-bit sound that you can control with our E-Z Command? digital control system. Rolling stock in this ready-to-run set includes a gondola, a quad hopper and caboose along with an E-Z Command? control center and 56?x38? oval of nickel silver track.