HO GEN AC4400CW Locomotive w/DCC and Sound FSRR 4421 (ATHG-2066)

HO-scale GE AC4400CW Diesel Locomotive with DCC and Sound in FSRR 4421 livery. This Genesis-class model from Athearn faithfully reproduces GE’s high-horsepower freight hauler for HO layouts, available in DCC-ready form or with Tsunami2 sound for a complete, ready-to-run experience. The FSRR 4421 road number and prototype details include illuminated number boards and a full cab interior visible through see-through windows, giving a convincing centerpiece for a modern freight roster.

Under the shell, the locomotive rides on a heavy die-cast frame with Genesis driveline, delivering strong pulling power and smooth, quiet operation on HO track thanks to a 5-pole skew-wound motor and all-wheel drive with reliable electrical pickup. It rides on RP25-contour wheels to match popular HO brands and comes packed with authentic details such as etched walkways, fine-scale handrails, LED lighting for numbers and ground lights, and a detailed cab area. For sound-equipped versions, a DCC decoder with Tsunami2 sound drives two speakers for realistic engine, horn, and bell effects, with NMRA-compatible functions and a CV chart for customization. FSRR-specific touches such as low-mounted number boards and a GPS dome complete the prototype look, and the model is designed for HO curves with a minimum radius of 18 inches (22 inches recommended); it’s also ready for weathering, including a grime-ready option to start the process.