This HO scale Alco HH-660 from Atlas Model Railroad Co. includes a QSI Quantum Digital Command Control (DCC) sound decoder. Listen to this HO diesel locomotive as it switches freight cars on this model train layout.
Video: Atlas HO scale Alco HH-660 diesel switcher
By Angela Cotey | May 3, 2011
| Last updated on February 11, 2021
Watch this Alco HH-660 diesel switcher from Atlas Model Railroad Co. in action on this HO scale model train layout
