Kusan-Auburn Boxed Set, reference KF-111 appears to contain an Alco AA set (one powered, one unpowered), with three freight cars, track and controller. Whether or not the complete set is pictured is unknown. The powered Alco diesel runs on 0-12v DC current. The transformer appears to be the K Series KS-5, which delivers a controlled supply only, via a reversing switch. What is the difference, if any, between the red and grey cased KS-5 transformers?
