TSU-4400 for EMD 4 Amp, 6-function decoder – #678-885017
The TSU-4400 is a universal-style, 4-amp Digital Sound Decoder with 6 function outputs. Designed for models with higher stall currents such as some S, O, and large scale locomotives; this decoder features easy-to-use terminal blocks for no-fault wiring and a higher audio amplifier for awesome volume, indoors or out. It includes an onboard connector for adding a CurrentKeeper (P.N. 810140) to maintain performance over dirty track and switches.