We understand that the new A-Series will work with the Sound ID reference, but is it also compatible with the previous version of Reference 4?

Reference 4 does not have the ability to output a profile, therefore ADAM A Control has no way to get filters out of Reference 4 and into the loudspeakers.

Sonarworks customers should update to SoundID Reference to be able to export a profile that A Control can read and upload to the loudspeakers.