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Welcome To TCS
Manufacturers of the highest quality sound and non sound DCC decoders.

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Now Shipping: WOWKit for Atlas HO-Scale RS-3 and More!

This WDK-ATL-1 WOWKit is a DCC sound total conversion solution which includes all of the components necessary to convert your engine to WOWSound with a built-in KA2 Keep-Alive™. Click on the image above to find out more about this exciting new product!

Included in this WOWKit:

1x WOW121-Diesel Decoder
1x AK-MB1 WOWMotherboard with a built-in KA2 Keep-Alive™
1x 35mm x 16mm WOWSpeaker (with speaker wires)
1x ATL-SH1 Speaker Housing

Now Shipping: ALCO 244 on All WOWDiesel Decoders

Did you know that nearly 58% of all ALCO Diesels ever made were powered by the 244 Prime Mover?
Order your premium WOWDiesel decoder featuring 9 Prime Movers all with CD quality sound in one decoder and load based auto notching with the distinctive ALCO 244.

New Atlas-Kato Diesel Motherboard

Now shipping the Atlas-Kato Diesel Motherboard! This built-in Keep-Alive™ motherboard is designed to replace the existing lighting board in many Atlas and Kato diesel locomotives and provide a plug for 21-pin decoders like the WOW121 or EU621. Pick up your AK-MB1 and make your Atlas and Kato Diesel conversions a snap!

Deck Your Sound Installations
with WOWSpeakers and Housings

We have released an extensive collection of WOWSpeakers and custom housings covering almost any model sound application.
Visit our WOWSpeakers page here
to select the perfect speaker and housing for your next installation.

Now Shipping: Drop-In decoder for Kato N-Scale ACS-64

The NEW Kato N-Scale ACS-64 has arrived and TCS has released the premier drop-in decoder for it.
Order the K7D4 and enjoy superior performance in your brand new locomotive!

Looking for a WOWDiesel Demonstration Video?

While we have been hard at work cutting new sounds and preparing new product releases BradleyDCC on youtube has been putting together this EXCELLENT WOWDiesel demonstration video. This video features fantastic audio clarity, excellent video quality, and beautiful locomotives. Take a look for a demonstration of each of the new prime movers and don't forget to give BradleyDCC a "Like" and "Comment" for his great work!

Diesel Sound Set 3 with 9 Prime Movers in One Decoder now Shipping!
ALL with CD quality sound! The best sound and features in the industry!


Diesel Sound Set 3 Shipping first week of January 2016

Features the ALCO 244 and includes all the original 8 prime movers in sound set 2.
Includes four EMD Prime Movers, AlCO 251, ALCO 244, GE FDL16, and 2 versions of the 7FDL16. Also added are the GE "Whoop" compressor, Hancock Air Whistle, and an E-Bell.
Click Here for a Complete Sound Listing

New, Now Shipping!
Diesel WOW121 Decoder and Diesel WOWMotherboards with built-in Keep-Alive™

Now available as complete WOWkits with speakers and housings designed for specific models. WDK-ATL-1 now shipping.

Use a TCS motherboard with built-in Keep-Alive™ and our WOW121 decoder for a simple installation. Simply remove the original lighting board, replace it with the WOWMotherboard (wired exactly the same as the original light board), and plug-in your WOW121-Diesel. You may need to install a speaker, depending on the locomotive, but all of the connections and power are handled cleanly and simply through the WOWMotherboard.
Click on any of the items above for more information!

Fits most Athearn Ready-To-Roll Diesel Locomotives --
Built-in 1.5v Regulator for use with the stock Athearn 1.5v Bulbs.
Also included are onboard current limit resistors for optional LED use.
Built-In motor clip for a simple slip on installation.
Click here to see this board installed in an Athearn SD45
KA2 Keep-Alive™
Fits most Athearn Genesis Diesel Locomotives --
Built-in 1.5v Regulator for use with the stock Athearn 1.5v Bulbs.
Also included are onboard current limit resistors for optional LED use.
This product will be shipping in Mid-September.
KA2 Keep-Alive™
Fits the Intermountain SD40-2 and Bowser C-636 + many more Built-In
KA2 Keep-Alive™
Fits the Intermountain ES44 and Bowser S12 + many more Built-In
KA2 Keep-Alive™

Fits many different Atlas and Kato diesel locomotives

Click here to see this board installed in an Kato SD40

KA2 Keep-Alive™

TCS WOWDiesel-EMD Demonstration and Preview Get the most of your WOWDiesel

Check out the video above to learn about "load based auto-notching" and calibration on the WOWDiesel. With a simple 2-step calibration you can have your locomotive load based auto-notching and running just like the demonstration units we use at our clinics and train shows!

New Decoder Tester from TCS
This premium decoder tester provides an easy way to test and program your decoder prior to installation.
Included on this tester are 8x LED's (with built-in resistors) for testing light functions, our top-of-the-line, 28mm WOWSpeaker for sound decoders, and an industry leading, 5-pole, Kato motor. Head over to product line section for more information.

Add the DT-AUX (sold separately, picture below) for even more decoder connections!

Come see TCS at one of the upcoming shows!

Train Show Location Booth Number Date
Amherst Railway Society The Eastern States Exposition Fairgrounds
1305 Memorial Avenue
West Springfield MA. 01089

Better Living Center,

Location 45: tables A, G, H, I, J

Saturday January 30, 2016 - 9:00am - 5:00pm
Sunday January 31, 2016 - 10:00am - 5:00pm

Come see us at a Clinic!
Clinic Location Date Notes
Amherst Railway Society Eastern States Exposition Young Clinic Room Saturday January 30, 2016, 2pm Learn about WOWSteam and the newest features. Understand about the WOWKits for steam decoder installations.
Amherst Railway Society Eastern States Exposition Young Clinic Room Sunday January 31, 2016, 2pm Learn about WOWDiesel and the newest features. Understand about the WOWKits for diesel decoder installations.

Online Guided Programming Tool
Looking to program features that aren't in Audio Assist™? Check out our Guided Programming Tool that makes programming your decoder as easy as navigating a menu!

Check Out the WOWSound Instructional Videos

Check out our Installation Pictures section for hundreds
of DCC decoder installations in tons of HO-Scale, N-Scale, and Z-Scale locomotives!

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