HO DDA40X Locomotive with DCC & Sound, UP #6901 (ATHG71621)

HO Scale DDA40X Centennial Locomotive with DCC & Sound — Union Pacific #6901 is a highly detailed, ready-to-run model that faithfully reproduces EMD’s 98-foot twin-engine diesel, the centerpiece of UP’s late-1960s power fleet. This edition recreates the Centennial as delivered, including the distinctive chicken-wire radiator grilles on the long hood for both prime movers. The model includes a DCC-compatible decoder with SoundTrax Tsunami2 sound and four cube speakers for authentic horn, bell, and engine sounds, while lighting brings the locomotive to life with illuminated truck lights, classification lights, and number boards. See-through walkways, separate MU hoses, a full cab interior, and fine-scale Celcon handrails add to the lifelike presence, all mounted on a heavy die-cast frame for sturdy, smooth operation on HO layouts.

On the track, this UP locomotive blends modern electronics with period detail: DCC-ready Quick Plug functionality via a 21-pin NEM connector, full NMRA-compatible functions in DCC mode, and eight-wheel drive with precision gearing for quiet, steady running. The Primed for Grime variant recreates an in-service look with faded base colors, while Legendary Liveries offer popular, historically inspired paint schemes for proto-freelance or display. Additional realism comes from coupler cut levers, MU hoses, Trainline hose, see-through cab windows, a detailed fuel tank, LED lighting, and body-mounted McHenry operating knuckle couplers. Finished with accurate paint schemes and prototype-inspired details, this model is ready to drop onto an HO layout and convincingly portray Union Pacific’s late-era power.