Bachmann Trains THUNDER CHIEF - HO Scale Ready to Run Electric Train Set With Sound Value Equipped Locomotive - HO Scale. With the roar of its mighty motor and a blast of its horn, the Thunder Chief announces its arrival. Commanding the attention of one and all, there is no missing the excitement of the Thunder Chief storming into the station. Featuring a DCC sound-equipped F7-A with a diesel sound package that includes prototypical prime mover, three air horns, and bell-all in polyphonic 16-bit sound that you can control with our E-Z Command digital control system. This digitally controlled train set with sound features: DCC sound-equipped F7-A diesel locomotive, 40' box car, three-dome tank car, off-center caboose, E-Z Command Control Center with wall pack and plug-in wiring, body-mounted E-Z Mate couplers, 56" x 38" oval of snap-fit nickel silver E-Z Track including 12 pieces of curved track, 3 pieces of straight track, and 1 plug-in, terminal rerailer, illustrated instruction manual.