HO GEN SD90MAC Locomotive with DCC and Sound, UP #3727 (ATHG-1933)

HO Scale Genesis EMD SD90MAC Diesel Locomotive with DCC and Sound in Union Pacific livery, UP 3727, is a high-fidelity model designed for realistic operation on HO-scale layouts. This ready-to-run locomotive combines a heavy die-cast frame with a Genesis driveline, a five-pole motor, and all-wheel drive for smooth, powerful performance, while features such as LED headlights and lit number boards, see-through steps, a full cab interior, windshield wipers, and fine-scale Celcon handrails deliver a prototypical appearance. The model uses a DCC-ready Quick Plug system with a 21-pin NEM connector for easy decoder upgrades, and a detailed fuel tank, walkways, trainline hoses, and other authentic detailing.

Sound-equipped versions include onboard DCC with SoundTraxx Tsunami2, dual cube speakers for clear audio, and full DCC functionality, enabling precise engine, horn, and bell sounds in both DC and DCC operation. Slow-speed performance is exceptionally smooth, with support for MU lashups and CV adjustments (a CV chart is included). Designed for HO layouts, it tolerates typical radii (minimum 18 inches, with 22 inches recommended) and offers road-number-specific variations in nose doors and windows, providing authentic options for building a prototype-like roster.