Russ,

Don't worry. Just chatted with you and we are on track.

YES... the XD9/SD1 can be set up for Manual Bass (instantly with voice(s) to the right OR with the Arranger On and controlled with the right (chords1-5) while you play the manual Bass with the left (BASSIST Feature) ).
This was initially introuduced in the XD-series and incoorporated into the SD1Plus (4.0 or later OS).

Thanks,

AJ ... will give you a shout next Tue.