This SoundTraxx TSU-1100 Tsunami2 Digital Sound & Control Decoder features a spectrum of prototypical sounds, 16-bit polyphonic sound processor, 14 hyperlight lighting effects and hyperdrive motor control with back-EMF. This micro 1-amp, universal-style format is ideal for small models with minimal space. The TSU-1100 includes an optional capacitor or can be wired to a CurrentKeeper 678-810140 to maintain performance over dirty track and switches.