Bring your Model Trains to life with SoundTraxx!

You know that Tsunami2 gives you awesome sounds and features, but did you know that the TSU-PNP Digital Sound Decoder is designed to simply replace the factory installed board in a ton of different models? With a quick board replacement you can bring your model to the next level!

Get your Favorite SoundTraxx Products for Christmas

At SoundTraxx, we make shopping for the Model Railroaders in your life easy! Just print our Honey Please List and have them check the products that they would like to see under the tree this year. Or if you are looking to drop some hints, fill it out and make it accessible to your friends and family.

Tsunami2 Digital Sound Decoders for Electric Models

Tsunami2 is not only for steam and diesel models. Check out Tsunami2 Electric features including pantograph operation sounds, traction motor whine, trolley stop request, trolley door sounds, arching sound and lighting effects, and electric servicing sounds! Learn more about our decoders for electric models.

SoundTraxx Customer Comments:

  • Our Support Staff
    “BIG thank you. Decoder arrived back, I got it installed with no problem into that custom paint unit and it sounds great. Thank you to you and your team for taking such good care of your customers.

    Always not easy to find such great customer support, thanks again. ”

    Jim Young
  • Customer Support Center
    We have a Customer Support Center staffed Monday - Friday 9:00 am to 5:30 pm, a very informative website, top notch manuals, and a growing YouTube Series to help you get the most out of your SoundTraxx products.

    Here a customer summarizes his experience with our customer support and that of another decoder company.

    “FYI his manuals are garbage. I grab the [original] ones for the ver 4. His translations omit more info than what’s in [the other] manuals... Anybody who calls (my experience) is treated like an idiot. Thanks for the help. Was impressed with support email today.”
  • Tsunami2 Experience
    I was just at Train Shack in Burbank and Todd told me he just got in a pair of Santa Fe F7's with new Tsunami 2. I had to try them out! They SOUND AWESOME!!!! SO LOUD TOO!!!

    It was originally programmed with a single note horn, wrong for the 5-chime the engine used. BUT THEN I SWITCH TO the LESLIE RS5T and THAT IS THE SOUND THAT AL AND I REMEMBER AND HAVE BEEN LOOKING FOR!!!!

    Also just simply going back and forth on a test track with factory settings no momentum or brake set up it's SOOOOO much better than the functions of the T1!
    - Started up with the alarm bell like real!
    - First speed step I heard the brake release!
    - It accelerated with the right sound and the prime mover sounded great!
    - Horn was just like I remember!
    - Even just slowing it down without the brake set up it felt and sounded real!
    - I hit emergency stop and it DIDN'T shut it down, but you good hear the air dump! PERFECT!

    Really great job!!!"

    -Ken J. Johnson, Hollywood Sound Designer

Welcome to SoundTraxx

SoundTraxx brings new dimensions in digital sound technology to your model railroad. Regardless of your scale or prototype, we have a sound system for you!

If you are unfamiliar with our products, we recommend you visit Choosing the Right Sound System first.

Latest News


Digital Sound Decoders
DCC Mobile Decoders
Lighting Decoders
Factory-Installed Decoders
Retail Price List
Product Catalog

SoundTraxx Career Opportunities

Embedded Systems Engineer
Full time position with competitive wage and benefits. Responsible for the design, development, testing and documentation of new Software/ Firmware/ Hardware systems for SoundTraxx products... Learn more

Supply and Logistics Clerk
Responsible for directly performing all shipping, receiving and inventory management functions that are relevant. This position requires efficient multi-tasking and the ability to prioritize tasks. Learn more

Production Assembler
The ideal candidate must be a hands-on individual who possesses a high level of drive, energy and integrity. Assembly experience and/or soldering is a plus, but we will train the right candidate. Learn more

Sound References