Just for the record - answer from Bachmann on decoders used.

On the item # 62257 this is a 2 function decoder made by a German company called Lenz.
The 65153 is a proprietary sound decoder made for us by Soundtraxx.

Thanks for the advise on CV's. Will be looking into it soon.

I have multiple EMD DD40AX I want to 'speed' match. Decoder pro won't read the decoders so I can't tell what decoders are installed.
I have both DCC w sound and DCC without models.
Anyone know what decoder models are used in both?