SoundTraxx TSU-4400 (Steam-2) DCC Sound Decoder 4 Amp ~ 884009 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. Spefications: Dimensions: 69 x 30.5 x 14mm Max. Motor Stall Current: 4A Max. Function Current: 400mA (each output) Function Outputs: 6 Audio Amplifier: 3 Watts, 8 Ohm Load Over 50 Sound Effects With Selectable Reverb Functioning Engine, Train & Dynamic Brakes Reactive Dynamic Digital Exhaust Hyperdrive2 Advanced Motor Control Supports Short & Long Addresses Standard & User-Loadable Speed Tables 14, 28 & 128 Speed Steps Load Compensation Directional & Rule 17 Lighting DCC Track Voltage: 7.5V ? 26V Over 20 Hyperlight Lighting Effects Operates on DC and DCC Layouts More Info: Tsunami2 is SoundTraxx’ new line of high-performance Digital Sound Decoders. This line provides high quality onboard locomotive sound, precision motor control and brilliant lighting effects. The Tsunami2 Digital Sound Decoder is designed to enhance your model railroading experience by giving you a wide variety of innovative features and only the most realistic sound for your models. Tsunami2 leads the industry in processing power with a 32-bit processor that provides the necessary horsepower to support 28 functions, 16 polyphonic sound channels, tons of sound and lighting effects, and advanced motor control.