A true pioneer in the model train industry, SoundTraxx has been creating innovative products for the discriminating model railroader since 1990. We proudly design and manufacture our industry-best products right here in the USA, and our friendly customer support staff work side-by-side with the rest of our product team.

The Tsunami2 TSU-2200
The TSU-2200 is a versatile decoder that will easily fit into a wide variety of HO to S scale models. You will feel like you are in the cab with the crisp sound and interactive features that Tsunami2 decoders have to offer!

Need Help Choosing a Sound Profile?
We have tons of sounds to match a wide range of locomotives. So many, in fact, we cannot fit them all on one decoder. Therefore, they are broken up into sound profiles of like sounds (Steam, EMD, GE, Electric, etc.). If you don't know which sound profile you need, the best place to start is the Sound Selection References. These will list all the prime movers or exhaust chuffs available on each sound profile. If you need further assistance explore these links: 

• Decoder Selector: Tells you which board format and part number you need for specific models.
• Sound Samples: Hear our sounds in action!
• Choosing the Right Sound System: If you are new to SoundTraxx, model railroading, or are unfamiliar with our products.
• Sound Selection References: There are several for each decoder and they can be found below or in the Manuals section of our website.

DYNAMIC DIGITAL EXHAUST 
For added realism, you’ll love our reactive Dynamic Digital Exhaust (DDE) feature. When your locomotive is traveling across flat terrain and simply maintaining speed, you will hear your locomotive chugging along. But, when the locomotive encounters a grade and the engineer applies more throttle to get the train up the hill, the engine sounds will automatically react and reflect the increase of power needed to crest the hill. DDE accomplishes this by calculating the changes in strain or load on the motor and adjusting the exhaust to appropriately simulate the work the engineer would be doing to the throttle of the engine. This gives Tsunami2 the ability to create the most realistic experience possible.