Digitrax, SDN144A0, 1 Amp, N Scale, Board Replacement Sound Decoder, Atlas GP38 & C420

Drop in Mobile Decoder for Atlas N Scale GP38 and similar Locomotives with short boards.

Preloaded with selectable GP38 or C420 Sound Schemes4 FX3 FunctionsFactory 18mm x 10mm, 8 ohm speakerFull Digitrax Series 4 mobile decoder feature setSpeed TablesSimplified Scaleable Back EMFAdvanced ConsistingForward and Reverse TrimTranspondingSupersonic Motor DriveDecoder Lock and much moreUse PR3 and SoundLoader Software to download your own fully customizable sound scheme to the decoderNo external sensor required for sound workloadchanges