soundtraxx 884005 tsunami2 steam loco 4amp

SoundTraxx -- TSU-4400 Digital Sound & Control Decoder - Tsunami2 -- This SoundTraxx TSU-4400 Tsunami2 Digital Sound & Control Decoder 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. The TSU-2200 includes a connector to easily add a CurrentKeeper 678-810140 to maintain performance over dirty track and switches.