With the LokSound family decoders we offer all model railroaders who want the utmost of authenticity on their layout, a real highlight. With LokSound , the excellent features of ESU-decoders are even more enhanced by the addition of sound functions. Its sounds simple, but “wow”: In the future, your locos not only run like the prototype, they sound exactly like it! That’s made possible through our award-winning LokSound technology- the reference for good sound on the layout since its introduction in 1999. By the inventor. By ESU. LokSound decoders are available for various applications, depending on gauge or digital system.