Thanks Mike,
  now I need to know if Bachmann sells these
sound units separately (or a tender with the
sound on board).

Hi,
  thanks for that. I do have something like that
to trigger sounds on my wife's "Christmas train."
 
  What I'm trying to do is to put "sound on board"
my engines.
              Dennis

Hello,
  I have most of the latest Bachmann HO steam engines.
I'm NOT interested in DCC but love Analog Sound.
  Do your latest releases with sound work on an analog
basis? If so, do you sell that sound system to retrofit
on engines equipped for DCC?
            Thanks,
               Dennis