> Thanks for the reply - I'm just trying to send notes directly
> (midi out) from a few midi controllers. Haven't tried any program
> changes. I know that they are needed to program certain aspects,
> but I thought it would have some basic function out of the box
> (especially because it does not ship with a manual)

You have to adjust the midi channel and reference note via the learn
function as described in the A-190-2 user manual.
And I'd recommend to turn on the midi transmitter after the A-100/A-190-2.
Some midi transmitter use the running mode (i.e. no status byte is sent
until the midi status changes). In this case the A-190-2 would not recognize
the midi note message (in learn mode too) because of the missing status
byte.

Best wishes
Dieter Doepfer