Designed for optimum-speed passenger service, the “J” was the last mainline steam locomotive to run in the United States. The Class J 4-8-4 has returned to the Bachmann HO line in a DCC Sound Value version that includes a SoundTraxx® steam package with authentic prototypical chuff, short and long whistles, bell, air pump, steam release, and blower—all in 16-bit polyphonic sound.