Product Support for: Sound Decoders -> Premium 1 Amp Sound Decoder HO Scale (SDXH166D)

The following is a list of Digitrax Power Xtenders and the Digitrax Decoders they are compatible with.  Power Xtenders only work with the following Series 6 decoders.  All Power Xtenders are Plug and Play.  Digitrax does not support the use or installation of Power Xtenders on any other decoder not listed below.   PX108-2 & PX112-2 works with:DH126D, DH126PS, DH126PDH166D, DH166PS, DH166PDH126MTDH166MTSDH186MTSDXH186MT This Power Xtender has a 2 pin plug. PX108-6 & PX112-6 works with:SDN136PSSDXN136PS This Power Xtender has a 6 pin harness with 8 ohm Oval 10x18mm speaker. PX108-6f & PX112-6f works with:DN166PS This Power Xtender has a 6 ...

My sound decoder has a capacitor, why do I need a PX112? The capacitor that came with your Digitrax sound decoder is designed to hold up sound operation in the presence of brief power interruptions.  It is not designed to keep the locomotive’s motor and lights running.  Our ears are very sensitive to sound interruptions so, the capacitor on your sound decoder will prevent most of these drop outs on average quality track.  Most people don’t even notice the small pauses in a locomotive’s movement and the small flashes of the lights when the track power is interrupted.  If you ...