During the early-1990's, EMD teamed-up with German engineering company Siemens to experiment with having an average, modern, North American type of freight diesel locomotive to become capable of providing AC-traction drive currents, and thus providing a high-horsepower rating and lower fuel consumption for railroads which had an ever-increasing demand for saving fuel consumption by using a lesser amount of units to haul most of their trains.
The EMD SD70MAC was first introduced in early 1993, and began production later-on during the same year after numerous tests and improvements were made. Since then, the EMD SD70MAC has been a staple of heavy freight lines across the country.
As with every Athearn Genesis release, the level of prototypical detail is nothing short of spectacular. Each individual model comes fully assembled and is meticulously crafted to match the prototype that was researched to create it.