SoundTraxx Decoder Selector

Welcome to the SoundTraxx Decoder Selector! This section will assist you in locating the correct decoder and bill of materials for installing a SoundTraxx digital sound decoder in your locomotive. Simply click on the scale of your locomotive, then the manufacturer of your locomotive and finally your specific model. Please note, those models with the initials NA listed under the speaker/ baffle column come with a speaker and baffle factory installed therefore these are Not Applicable. Those models that have not available listed under the speaker/ baffle column require a speaker or baffle that SoundTraxx doesn’t currently offer.

NEW! We are now beginning to include Application Notes with our decoder recommendations. These will be ranked by their difficulty level and provide step-by-step instructions for installation as well as a comprehensive Bill of Materials so you can have everything you need at your fingertips before you begin. You will be able to discern which locomotives currently have an installation guide by noting if the model description is highlighted in blue.  This is an ongoing improvement that will take place over many months, so if you don’t see a guide for a particular model, please check back from time to time.


For more information regarding locomotive decoder installations, please contact our technical support.

Click on the Model scale your locomotive is from the list below

N scale

HO scale (Hon3)

S scale (Sn3)

O scale (On3, On30)

G Scale (#1, Fn3)