WOW 121- Diesel Sound Decoder:
 Now Shipping with 8 Prime Movers in One Decoder! This 4-function, 21-Pin, plug-in diesel sound decoder brings the superior audio quality and operational performance of WOWSound to your diesel locomotive. Included are all of the amazing features from the WOWSteam including Audio Assist™, Realistic Braking, and Prototypical Operation. The available sound set contains the EMD 567, 645 and 710, as well as the GE FDL16, and 7FDL16, and the Alco 251 prime movers.
Featuring Load-Based Auto-Notching (Patent Pending), for automatic notch selection based on your set speed and load.
Dimensions: 1.28" x .69" x .22" or 32.5mm x 17.5mm x 5.6mm
MSRP is $119.95. (Picture courtesy of TCS.)
For more information, please visit this product's webpage.