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SoundTraxx began providing Tsunami Digital Sound Decoders to Bowser Manufacturing for their Executive Line HO scale diesel locomotives in 2009.

If you have purchased a Executive Line locomotive equipped with SoundTraxx Tsunami Digital Sound Technology, congratulations! This state-of-the-art sound decoder will provide the pleasures of high quality, digital sound and the benefits of today’s DCC technology.

Each Bowser sound-equipped locomotive comes with multiple horns to allow you to customize the locomotive to your personal tastes. These Bowser Executive line sound equipped models include all of the amazing features found in the aftermarket Tsunami DSDs, including the ability to set up manual notching, a built in 7 band equalizer, built in reverb, all 15 Hyperlight lighting effects, and advanced motor controls.

Executive Line


Listed below are the locomotive models that are currently or will be shipped with SoundTraxx decoders installed. Select your model from the list below to link to a quick reference document specific to the locomotive. For a complete breakdown of all of the CVs and Tsunami’s capabilities please reference the documentation on our website or visit

Operating in DC


Operating in DCC


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